diff --git a/core/lib/Drupal/Core/Extension/UpdateModuleHandler.php b/core/lib/Drupal/Core/Extension/UpdateModuleHandler.php
index 7d7ac9c..f96afd4 100644
--- a/core/lib/Drupal/Core/Extension/UpdateModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/UpdateModuleHandler.php
@@ -67,19 +67,6 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
     $schema_store = \Drupal::keyValue('system.schema');
     $old_schema = array();
     foreach ($module_list as $module) {
-      // Check for initial schema and install it. The schema version of a newly
-      // installed module is always 0. Using 8000 here would be inconsistent
-      // since $module_update_8000() may involve a schema change, and we want
-      // to install the schema as it was before any updates were added.
-      module_load_install($module);
-      $function = $module . '_schema_0';
-      if (function_exists($function)) {
-        $schema = $function();
-        foreach ($schema as $table => $spec) {
-          db_create_table($table, $spec);
-        }
-      }
-
       // Enable the module with a weight of 0.
       $module_config = \Drupal::config('system.module');
       $module_config
diff --git a/core/modules/block/custom_block/custom_block.install b/core/modules/block/custom_block/custom_block.install
index 3474559..b879444 100644
--- a/core/modules/block/custom_block/custom_block.install
+++ b/core/modules/block/custom_block/custom_block.install
@@ -121,120 +121,3 @@ function custom_block_schema() {
   );
   return $schema;
 }
-
-/**
- * Implements hook_schema_0().
- */
-function custom_block_schema_0() {
-  $schema = array();
-  $schema['custom_block'] = array(
-    'description' => 'Stores contents of custom-made blocks.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'description' => "The block's {custom_block}.id.",
-      ),
-      'uuid' => array(
-        'description' => 'Unique Key: Universally unique identifier for this entity.',
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => FALSE,
-      ),
-      'info' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Block description.',
-      ),
-      // Defaults to NULL in order to avoid a brief period of potential
-      // deadlocks on the index.
-      'revision_id' => array(
-        'description' => 'The current {block_custom_revision}.revision_id version identifier.',
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => FALSE,
-        'default' => NULL,
-      ),
-      'type' => array(
-        'description' => 'The type of this custom block.',
-        'type' => 'varchar',
-        'length' => 32,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the custom block was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-      'langcode' => array(
-        'description' => 'The {language}.langcode of this node.',
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-      ),
-    ),
-    'primary key' => array('id'),
-    'indexes' => array(
-      'block_custom_type'   => array(array('type', 4)),
-    ),
-    'unique keys' => array(
-      'revision_id' => array('revision_id'),
-      'uuid' => array('uuid'),
-      'info' => array('info'),
-    ),
-    'foreign keys' => array(
-      'custom_block_revision' => array(
-        'table' => 'custom_block_revision',
-        'columns' => array('revision_id' => 'revision_id'),
-      ),
-    ),
-  );
-
-  $schema['custom_block_revision'] = array(
-    'description' => 'Stores contents of custom-made blocks.',
-    'fields' => array(
-      'id' => array(
-        'type' => 'int',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => "The block's {custom_block}.id.",
-      ),
-      // Defaults to NULL in order to avoid a brief period of potential
-      // deadlocks on the index.
-      'revision_id' => array(
-        'description' => 'The current version identifier.',
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-      'log' => array(
-        'description' => 'The log entry explaining the changes in this version.',
-        'type' => 'text',
-        'not null' => TRUE,
-        'size' => 'big',
-      ),
-      'info' => array(
-        'type' => 'varchar',
-        'length' => 128,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Block description.',
-      ),
-      'changed' => array(
-        'description' => 'The Unix timestamp when the version was most recently saved.',
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-      ),
-    ),
-    'primary key' => array('revision_id'),
-  );
-  return $schema;
-}
diff --git a/core/modules/views/views.install b/core/modules/views/views.install
index d3c0dee..e6bc46e 100644
--- a/core/modules/views/views.install
+++ b/core/modules/views/views.install
@@ -13,17 +13,3 @@
 function views_install() {
   module_set_weight('views', 10);
 }
-
-/**
- * Provide an initial schema.
- *
- * @see UpdateModuleHandler::enable().
- */
-function views_schema_0() {
-  module_load_install('system');
-  // Add the cache_views_info and cache_views_results tables.
-  $cache_schema = system_schema_cache_8007();
-  $schema['cache_views_info'] = $cache_schema;
-  $schema['cache_views_results'] = $cache_schema;
-  return $schema;
-}