Remove "-v2" from docker image names

Going to try to replace cloud build. I disabled the cloud build triggers
at https://pantheon.corp.google.com/cloud-build/triggers?project=skia-public

Bug: skia:9514
Change-Id: I6ac6e74f64fe5b1ecf33cea4b0fb7b53767b17a6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261548
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
2 files changed