Revert "PiP: Recalculate size if too big/small on display change."

This reverts commit 4ef153a7.

Reason for revert: This fixes a foldable bug and so not really needed anymore for sc-v2. We'll leave it master only.

Bug: b/205761901
Bug: b/206644532
Change-Id: Ia50d491d89a4c9faaa49c3e2b9afe38f73bd7f57