Remove Bazel+Ganesh+Dawn builds from the CQ/CI

Not worth the effort until we decide to test this (i.e. we can
replace GN fully with Bazel)

Change-Id: Ia6250004532c58ffdb66d5b55162f8de968b5c31
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/689256
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
3 files changed