Remove testWedged_Registered_Prioritized.

The logic for tracking ANRs for prioritized
broadcasts was removed before submitting but
the test was not removed and somehow presubmit
didn't catch this.

Bug: 265537912
Test: atest ./services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
Change-Id: Ic84fae97f1708db59fcb8d34a94d2e3b4a2ab3f8