Revert "Fixed focus transfer for GridLayoutManager and Leanback picker widgets"

ag/1864147 breaks tests.

This reverts commit a2b8c1ba43e061620043eee7a4749b7f2e364570.

Bug: 34814581
Change-Id: I2cae846e33529975e93d31e709270fd8e0803f1e
8 files changed