Remove CQ for unsupported branch chrome/m146

Change-Id: Ida3e23a0b732fb428178d11cf76e641d445d5514
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1252243
Bot-Commit: chrome-branch-day <chrome-branch-day@chops-service-accounts.iam.gserviceaccount.com>
1 file changed