Remove CQ for unsupported branch chrome/m102

Change-Id: I891764ccd418c72b3d9e060581d8905bd61ed95b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/571239
Reviewed-by: Rakshit Sharma <sharaks@google.com>
Auto-Submit: Rakshit Sharma <sharaks@google.com>
Reviewed-by: Heather Miller <hcm@google.com>