Revert "1/ Add onStartTransition() callback for SYSUI_STATE_ONE_HANDED_ACTIVE"

This reverts commit 3e208562150aed2dfcacd3ebe9c50b5c04a67c0f.

Reason for revert: test for b/186197537

Change-Id: Ifd17094f0231b0d6efcf1318cbc86560c5a8f6d1
3 files changed