ci: remove unsupported review-thread workflow trigger

Author: Komzpa

.github/workflows/codex-review-labels.yml

@@ -10,8 +10,6 @@ on:
     types: [created, edited]
   pull_request_review:
     types: [submitted, edited, dismissed]
-  pull_request_review_thread:
-    types: [resolved, unresolved]
   schedule:
     - cron: "*/15 * * * *"
 
@@ -35,7 +33,6 @@ jobs:
       ${{
         github.event_name == 'pull_request_target' ||
         github.event_name == 'pull_request_review' ||
-        github.event_name == 'pull_request_review_thread' ||
         (github.event_name == 'issue_comment' && github.event.issue.pull_request)
       }}