Remove CQ for unsupported branch chrome/m111

Change-Id: I711aecc3017b4e88a581937afcc4625f48c6f08a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/702405
Reviewed-by: Rakshit Sharma <sharaks@google.com>
Reviewed-by: Heather Miller <hcm@google.com>