Revert "fix: make sure lock file maintenance branch is not stale before skipping (#1265)"

This reverts commit 1aba7c79.

Fixes #1425

lib/workers/branch/lock-files.js

@@ -290,8 +290,7 @@ async function getUpdatedLockFiles(config) {
   const updatedLockFiles = [];
   if (
     config.type === 'lockFileMaintenance' &&
-    (await platform.branchExists(config.branchName)) &&
-    !await platform.isBranchStale(config.branchName)
+    (await platform.branchExists(config.branchName))
   ) {
     return { lockFileErrors, updatedLockFiles };
   }