Remove conflict window crop

We actually do not need to crop the snapshot re-parented to the leash
since it's bound to the Task's bounds.

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/eh7phISItWvnhSoZz8GKh8
Bug: 234642410
Test: Enter content-pip from content away from the top, see video
Change-Id: I43c1ed6088d1be15b87326fb4f0cf459956a7c00