remove SK_SUPPORT_LEGACY_CLIP_REGIONOPS for android

... to land *after* we land the change in master to use SkClipOps

BUG=skia:

Change-Id: I58d73866324aae9b9693afcd2a81aef503241a46
NOTRY=True
TBR=djsollen
Reviewed-on: https://skia-review.googlesource.com/5678
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
1 file changed