Revert "Test luci.notifier."

This reverts commit 8df59bc74ebb4d0b8e5d80a8b4f5c674db2a9c4d.

Reason for revert: Test completed.

Original change's description:
> Test luci.notifier.
> 
> This CL will be reverted as soon as we verify that the fix applied in
> https://webrtc-review.googlesource.com/c/src/+/179062 works.
> 
> Bug: None
> Change-Id: I1ef48f8e69d5592154b154de1700858aea4c32c4
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179063
> Reviewed-by: Jeremy Leconte <jleconte@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31703}

TBR=mbonadei@webrtc.org,jleconte@webrtc.org

Change-Id: If0d8b16ef92fd5b093ac3b8c22f04fb8e2822aa8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179087
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31709}

tools_webrtc/autoroller/roll_deps.py

@@ -713,8 +713,7 @@ def main():
     logging.info('Uploading CL...')
     if not opts.dry_run:
       _UploadCL(commit_queue_mode)
-
-  raise Exception('Test')
+  return 0
 
 
 if __name__ == '__main__':