Remove unused methods.

lib/private/files/storage/local.php

@@ -279,19 +279,5 @@ if (\OC_Util::runningOnWindows()) {
 		public function isLocal() {
 			return true;
 		}
-
-		/**
-		 * Acquire a lock on a file
-		 */
-		public function getLock($path, $lockType) {
-			return true;
-		}
-
-		/**
-		 * Release an existing lock
-		 */
-		public function releaseLock($path) {
-			return true;
-		}
 	}
 }