diff --git a/core/core.services.yml b/core/core.services.yml
index 3eee8fd..e111880 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -553,7 +553,7 @@ services:
     arguments: ['@current_route_match']
   router.route_provider:
     class: Drupal\Core\Routing\RouteProvider
-    arguments: ['@database', '@router.builder', '@state', '@path.current']
+    arguments: ['@database', '@state', '@path.current']
     tags:
       - { name: event_subscriber }
       - { name: backend_overridable }
diff --git a/core/lib/Drupal/Core/Routing/RouteBuilder.php b/core/lib/Drupal/Core/Routing/RouteBuilder.php
index 74d60d6..db516af 100644
--- a/core/lib/Drupal/Core/Routing/RouteBuilder.php
+++ b/core/lib/Drupal/Core/Routing/RouteBuilder.php
@@ -73,14 +73,14 @@ class RouteBuilder implements RouteBuilderInterface, DestructableInterface {
   protected $routeCollection;
 
   /**
-   * Flag that indiciates if we are currently rebuilding the routes.
+   * Flag that indicates if we are currently rebuilding the routes.
    *
    * @var bool
    */
   protected $building = FALSE;
 
   /**
-   * Flag that indiciates if we should rebuild at the end of the request.
+   * Flag that indicates if we should rebuild at the end of the request.
    *
    * @var bool
    */
diff --git a/core/lib/Drupal/Core/Routing/RouteProvider.php b/core/lib/Drupal/Core/Routing/RouteProvider.php
index 86ecbd1..1f3e580 100644
--- a/core/lib/Drupal/Core/Routing/RouteProvider.php
+++ b/core/lib/Drupal/Core/Routing/RouteProvider.php
@@ -40,13 +40,6 @@ class RouteProvider implements RouteProviderInterface, PagedRouteProviderInterfa
   protected $tableName;
 
   /**
-   * The route builder.
-   *
-   * @var \Drupal\Core\Routing\RouteBuilderInterface
-   */
-  protected $routeBuilder;
-
-  /**
    * The state.
    *
    * @var \Drupal\Core\State\StateInterface
@@ -72,8 +65,6 @@ class RouteProvider implements RouteProviderInterface, PagedRouteProviderInterfa
    *
    * @param \Drupal\Core\Database\Connection $connection
    *   A database connection object.
-   * @param \Drupal\Core\Routing\RouteBuilderInterface $route_builder
-   *   The route builder.
    * @param \Drupal\Core\State\StateInterface $state
    *   The state.
    * @param \Drupal\Core\Path\CurrentPathStack $current_path
@@ -81,9 +72,8 @@ class RouteProvider implements RouteProviderInterface, PagedRouteProviderInterfa
    * @param string $table
    *   The table in the database to use for matching.
    */
-  public function __construct(Connection $connection, RouteBuilderInterface $route_builder, StateInterface $state, CurrentPathStack $current_path, $table = 'router') {
+  public function __construct(Connection $connection, StateInterface $state, CurrentPathStack $current_path, $table = 'router') {
     $this->connection = $connection;
-    $this->routeBuilder = $route_builder;
     $this->state = $state;
     $this->tableName = $table;
     $this->currentPath = $current_path;
diff --git a/core/modules/system/src/Tests/Routing/RouteProviderTest.php b/core/modules/system/src/Tests/Routing/RouteProviderTest.php
index f8e4c5a..c9af886 100644
--- a/core/modules/system/src/Tests/Routing/RouteProviderTest.php
+++ b/core/modules/system/src/Tests/Routing/RouteProviderTest.php
@@ -21,7 +21,6 @@
 use Drupal\Core\Database\Database;
 use Drupal\Core\Routing\MatcherDumper;
 use Drupal\Tests\Core\Routing\RoutingFixtures;
-use Drupal\Tests\Core\Routing\NullRouteBuilder;
 
 /**
  * Confirm that the default route provider is working correctly.
@@ -38,13 +37,6 @@ class RouteProviderTest extends KernelTestBase {
   protected $fixtures;
 
   /**
-   * A null route builder to enable testing of the route provider.
-   *
-   * @var \Drupal\Core\Routing\RouteBuilderInterface
-   */
-  protected $routeBuilder;
-
-  /**
    * The state.
    *
    * @var \Drupal\Core\State\StateInterface
@@ -61,7 +53,6 @@ class RouteProviderTest extends KernelTestBase {
   protected function setUp() {
     parent::setUp();
     $this->fixtures = new RoutingFixtures();
-    $this->routeBuilder = new NullRouteBuilder();
     $this->state = new State(new KeyValueMemoryFactory());
     $this->currentPath = new CurrentPathStack(new RequestStack());
   }
@@ -78,7 +69,7 @@ protected function tearDown() {
   public function testCandidateOutlines() {
 
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $parts = array('node', '5', 'edit');
 
@@ -101,7 +92,7 @@ public function testCandidateOutlines() {
    */
   function testExactPathMatch() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -125,7 +116,7 @@ function testExactPathMatch() {
    */
   function testOutlinePathMatch() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -154,7 +145,7 @@ function testOutlinePathMatch() {
    */
   function testOutlinePathMatchTrailingSlash() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -183,7 +174,7 @@ function testOutlinePathMatchTrailingSlash() {
    */
   function testOutlinePathMatchDefaults() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -221,7 +212,7 @@ function testOutlinePathMatchDefaults() {
    */
   function testOutlinePathMatchDefaultsCollision() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -260,7 +251,7 @@ function testOutlinePathMatchDefaultsCollision() {
    */
   function testOutlinePathMatchDefaultsCollision2() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -299,7 +290,7 @@ function testOutlinePathMatchDefaultsCollision2() {
    */
   public function testOutlinePathMatchZero() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -334,7 +325,7 @@ public function testOutlinePathMatchZero() {
    */
   function testOutlinePathNoMatch() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -359,7 +350,7 @@ function testOutlinePathNoMatch() {
    */
   function testCurrentPath() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -384,7 +375,7 @@ function testCurrentPath() {
    */
   public function testRouteByName() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
 
@@ -419,7 +410,7 @@ public function testRouteByName() {
    */
   public function testGetRoutesByPatternWithLongPatterns() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
     // This pattern has only 3 parts, so we will get candidates, but no routes,
@@ -477,7 +468,7 @@ public function testGetRoutesByPatternWithLongPatterns() {
    */
   public function testGetRoutesPaged() {
     $connection = Database::getConnection();
-    $provider = new RouteProvider($connection, $this->routeBuilder, $this->state, $this->currentPath, 'test_routes');
+    $provider = new RouteProvider($connection, $this->state, $this->currentPath, 'test_routes');
 
     $this->fixtures->createTables($connection);
     $dumper = new MatcherDumper($connection, $this->state, 'test_routes');
diff --git a/core/tests/Drupal/Tests/Core/Routing/NullRouteBuilder.php b/core/tests/Drupal/Tests/Core/Routing/NullRouteBuilder.php
deleted file mode 100644
index 58cb2af..0000000
--- a/core/tests/Drupal/Tests/Core/Routing/NullRouteBuilder.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-namespace Drupal\Tests\Core\Routing;
-
-use Drupal\Core\Routing\RouteBuilderInterface;
-
-class NullRouteBuilder implements RouteBuilderInterface {
-
-  public function setRebuildNeeded() {
-  }
-
-  public function rebuild() {
-  }
-
-  public function getCollectionDuringRebuild() {
-    return FALSE;
-  }
-
-  public function rebuildIfNeeded() {
-  }
-
-}