Revert "Add CTS test cases for new exposing APIs(2/2)"

Revert submission 26014015-Add CTS test cases for new exposing APIs

Reason for revert: The original feature was abandon

Bug: 329561487

Reverted changes: /q/submissionid:26014015-Add+CTS+test+cases+for+new+exposing+APIs
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:fceb0744db618923a89554be2a0d5d7d32742008)
Merged-In: I12fa8eefdaf41f41b6b4bf5dfbb485c2d51d3d9e
Change-Id: I12fa8eefdaf41f41b6b4bf5dfbb485c2d51d3d9e
Revert FaceManager changes.