diff --git a/modules/simpletest/tests/upgrade/drupal-6.menu.database.php b/modules/simpletest/tests/upgrade/drupal-6.menu.database.php
index 7fae337..8962615 100644
--- a/modules/simpletest/tests/upgrade/drupal-6.menu.database.php
+++ b/modules/simpletest/tests/upgrade/drupal-6.menu.database.php
@@ -126,33 +126,6 @@ db_insert('menu_links')->fields(array(
   'p9' => '0',
   'updated' => '0',
 ))
-->values(array(
-  'menu_name' => 'secondary-links',
-  'mlid' => '206',
-  'plid' => '0',
-  'link_path' => 'node',
-  'router_path' => 'node',
-  'link_title' => 'node-page-with-query',
-  'options' => 'a:2:{s:5:"query";s:14:"page=1&node=10";s:10:"attributes";a:1:{s:5:"title";s:0:"";}}',
-  'module' => 'menu',
-  'hidden' => '0',
-  'external' => '0',
-  'has_children' => '0',
-  'expanded' => '0',
-  'weight' => '2',
-  'depth' => '1',
-  'customized' => '1',
-  'p1' => '206',
-  'p2' => '0',
-  'p3' => '0',
-  'p4' => '0',
-  'p5' => '0',
-  'p6' => '0',
-  'p7' => '0',
-  'p8' => '0',
-  'p9' => '0',
-  'updated' => '0',
-))
 ->execute();
 db_insert('blocks')->fields(array(
   'bid',
diff --git a/modules/system/system.install b/modules/system/system.install
index 6d81420..1161d6c 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -3016,24 +3016,12 @@ function system_update_7073() {
 }
 
 /**
- * Convert menu_links query strings to arrays.
+ * This update has been removed and will not run.
  */
 function system_update_7074() {
-  $query = db_select('menu_links', 'ml', array('fetch' => PDO::FETCH_ASSOC))
-    ->fields('ml', array('mlid', 'options'))
-    ->condition('options', '%query%', 'LIKE');
-  foreach ($query->execute() as $menu_link) {
-    $menu_link['options'] = unserialize($menu_link['options']);
-    if (isset($menu_link['options']['query']) && is_string($menu_link['options']['query'])) {
-      $menu_link['options']['query'] = drupal_get_query_array($menu_link['options']['query']);
-      db_update('menu_links')
-        ->fields(array(
-          'options' => serialize($menu_link['options']),
-        ))
-        ->condition('mlid', $menu_link['mlid'], '=')
-        ->execute();
-    }
-  }
+  // This update function previously converted menu_links query strings to
+  // arrays. It has been removed for now due to incompatibility with
+  // PostgreSQL.
 }
 
 /**