Remove legacy containedInClip code

It seems that we've already rebaselined the golden images

TBR: reed@google.com
Bug: skia:7271
Change-Id: I841dc4933f0cad015c3c6da7bd08ddfb2a35c5a2
Reviewed-on: https://skia-review.googlesource.com/92060
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
4 files changed