clean up: remove artificial mouse loc rejects

Now that "point" is local (viewer may have modified it for zooming or panning),
it no longer makes sense to check for out-of-bounds.

Change-Id: I8881f8b27be96973cb7687b25d93a0de5a22f5db
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/265218
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed