Change dependency to standard mockito-target-minus-junit4

The mockito-updated-target-minus-junit4 target was added because
some tests needed a later version of mockito than was available
through mockito-target-minus-junit4. Since the latter has now
been upgraded to 2.7.13 that is no longer true and so users of
mockito-updated-target-minus-junit4 can be switched to use
mockito-target-minus-junit4 instead.

Bug: 32912773
Test: make checkbuild && runtest systemui
Change-Id: If7e4dd26d7d0e93731856e9739a048c89a835333