[autoroll] Remove chat notifications for Catapult roller
[autoroll] Remove chat notifications for Catapult roller

Bug: skia:
Change-Id: Ieaaa35567d8b83375ee68b7eaebb5c6ebdb1cd37
Reviewed-on: https://skia-review.googlesource.com/c/195104
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot