diff --git a/src/Util/Lock.php b/src/Util/Lock.php
index 76e29826cb..b6a4a97f18 100644
--- a/src/Util/Lock.php
+++ b/src/Util/Lock.php
@@ -94,9 +94,4 @@ class Lock
 	{
 		self::getDriver()->releaseAll();
 	}
-
-	public static function isLocked($key)
-	{
-
-	}
 }