revert(renovate): "fix(renovate): try to improve lockfile PR titles (#…

…2668)" (#2839)

This reverts commit eb51576.

The original commit did not have the desired effect, and we're now
actively seeking assistance from Renovate on
renovatebot/renovate#32379 so having it
further clouds the issue.

renovate.json

@@ -12,8 +12,7 @@
   "osvVulnerabilityAlerts": true,
   "lockFileMaintenance": {
     "enabled": true,
-    "schedule": ["before 6am on wednesday"],
-    "commitMessageTopic": "group {{groupName}}"
+    "schedule": ["before 6am on wednesday"]
   },
   "git-submodules": {
     "enabled": false