Migrate OneHanded to WM shell (1/n)

Remove most of inject in onehanded package for further moving work.

Bug: 161980408
Test: m -j
Test: atest atest com.android.systemui.onehanded
Test: manual check onehanded function
Change-Id: I80cb6c323f553cb4da6c309626890f2fc8d400bc
10 files changed