Removing binder claas from main thread related to widget sizes

Widget size is deterministic based on device profile, so it can be
set during the loader itself. Any further changes are handled by
workspace

Bug: 318539160
Test: Verified inflated widgets have correct size
Flag: N/A
Change-Id: I84e803a5ccd49bcc6c2a19ab326f6bc1a3d9a5bd