Fix typo for userFilter when registering for ACTION_USER_REMOVED

This commit fixes a typo in the RegisteredServicesCache when
registering for the ACTION_USER_REMOVED broadcast; previously this
action was added to the sdFilter that was defined for the previous
call to registerReceiver, but then the last call to registerReceiver
used the empty userFilter.

Fixes: 214122859
Test: Manually verified receiver was successfully registered with action
Change-Id: I72b49fa02845844fe7788817430f289f2aad7bc4