Revert "Move widget picker tests to Robolectric"

This reverts commit efc24f92514ea2cc78502f5528c4ab98abec3a2e.

Reason for revert: Potential cause for flakiness https://android-build.corp.google.com/test_investigate/?invocationId=I07000010279081631&testResultId=TR32129311605132927

Change-Id: I4f0154bc101b6bc840c11ff0b6bf42f4ebc5ed03
10 files changed