fix: Ensure removal of specific stale developer comments

This commit ensures that specific stale developer comments,
which were artifacts of the iterative development process,
are definitively removed from the current version of
`scripts/gha/get_pr_review_comments.py`.

The targeted comments were:
- `# Removed skip_outdated message block`
- `# is_effectively_outdated is no longer needed with the new distinct flags`

These lines were confirmed to be absent after a targeted removal
operation, contributing to a cleaner codebase.

Author: google-labs-jules[bot]

scripts/gha/get_pr_review_comments.py

@@ -100,7 +100,6 @@ def main():
     sys.stderr.write(f"Fetching comments for PR #{args.pull_number} from {firebase_github.OWNER}/{firebase_github.REPO}...\n")
     if args.since:
         sys.stderr.write(f"Filtering comments updated since: {args.since}\n")
-    # Removed skip_outdated message block
 
 
     comments = firebase_github.get_pull_request_review_comments(
@@ -125,7 +124,6 @@ def main():
 
         status_text = ""
         line_to_display = None
-        # is_effectively_outdated is no longer needed with the new distinct flags
 
         if current_pos is None:
             status_text = STATUS_IRRELEVANT