diff --git a/core/includes/schema.inc b/core/includes/schema.inc
index ac0ffad..56339b8 100644
--- a/core/includes/schema.inc
+++ b/core/includes/schema.inc
@@ -27,9 +27,6 @@
 /**
  * Gets the schema definition of a table, or the whole database schema.
  *
- * The returned schema will include any modifications made by any
- * module that implements hook_schema_alter().
- *
  * @param string $table
  *   The name of the table. If not given, the schema of all tables is returned.
  * @param bool $rebuild
@@ -59,9 +56,6 @@ function drupal_get_schema($table = NULL, $rebuild = FALSE) {
 /**
  * Gets the whole database schema.
  *
- * The returned schema will include any modifications made by any
- * module that implements hook_schema_alter().
- *
  * @param bool $rebuild
  *   If TRUE, the schema will be rebuilt instead of retrieved from the cache.
  */
@@ -91,7 +85,6 @@ function drupal_get_complete_schema($rebuild = FALSE) {
         _drupal_schema_initialize($current, $module);
         $schema = array_merge($schema, $current);
       }
-      drupal_alter('schema', $schema);
 
       if ($rebuild) {
         Cache::deleteTags(array('schema' => TRUE));
@@ -203,10 +196,6 @@ function drupal_set_installed_schema_version($module, $version) {
 /**
  * Creates all tables defined in a module's hook_schema().
  *
- * Note: This function does not pass the module's schema through
- * hook_schema_alter(). The module's tables will be created exactly as the
- * module defines them.
- *
  * @param string $module
  *   The module for which the tables will be created.
  */
@@ -222,10 +211,6 @@ function drupal_install_schema($module) {
 /**
  * Removes all tables defined in a module's hook_schema().
  *
- * Note: This function does not pass the module's schema through
- * hook_schema_alter(). The module's tables will be created exactly as the
- * module defines them.
- *
  * @param string $module
  *   The module for which the tables will be removed.
  *
@@ -250,19 +235,12 @@ function drupal_uninstall_schema($module) {
  *
  * Use this function only if you explicitly need the original
  * specification of a schema, as it was defined in a module's
- * hook_schema(). No additional default values will be set,
- * hook_schema_alter() is not invoked and these unprocessed
- * definitions won't be cached.
+ * hook_schema().
  *
  * This function can be used to retrieve a schema specification in
  * hook_schema(), so it allows you to derive your tables from existing
  * specifications.
  *
- * It is also used by drupal_install_schema() and
- * drupal_uninstall_schema() to ensure that a module's tables are
- * created exactly as specified without any changes introduced by a
- * module that implements hook_schema_alter().
- *
  * @param string $module
  *   The module to which the table belongs.
  * @param string $table