diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 247d51fa2b4c22c18393d03070dcea1400dee3ee..caa20b91c18618e0eba9757aeb32b17c6ae4d7ee 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -1192,18 +1192,6 @@ function module_exists($module) {
   return \Drupal::moduleHandler()->moduleExists($module);
 }
 
-/**
- * Determines whether a module implements a hook.
- *
- * @deprecated in Drupal 8.x-dev, will be removed before Drupal 8.0.
- *   Use \Drupal::moduleHandler()->implementsHook($module, $hook).
- *
- * @see \Drupal\Core\Extension\ModuleHandler::implementsHook()
- */
-function module_hook($module, $hook) {
-  return \Drupal::moduleHandler()->implementsHook($module, $hook);
-}
-
 /**
  * Returns the test prefix if this is an internal request from SimpleTest.
  *