Update uiautomator references in packages/PrintSpooler/tests/outofprocess

* Remove unused dependencies.
* Replace "ub-uiautomator" (v2.2.0) with
  "androidx.test.uiautomator_uiautomator" (v2.3.0).

Bug: 235842600
Test: presubmit
Change-Id: I550a1a23c0bdea442cfa1bb9958afbcd4a2637b5
2 files changed