This change do the 2 things:
1. Add new junit tests files which replace robolectric
RobolectricTestRunner & RuntimeEnvironment with
AndroidX objects without problem.
2. Remove the robolectric test files which have it's new junit files.
This change migrate 103 files, there are still 1209
files to go.
Bug: 174728471
Test: atest
make RunSettingsRoboTests
Change-Id: I15ed3f4745b85862f720aabbf710ce1475aced93