Revert "Added mockito-extended support to WmTests."

This reverts commit 953fd225ccba3f46e336228362063bcafcac7fd5.

Reason for revert: Breaks pre-submit tests in cloud...
Bug: 113806960

Change-Id: I464d6a3acd40bfb112d94cbc4ff1c076ba5b59f1
26 files changed