Update uiautomator references in packages/modules/Connectivity/tests/cts/hostside/app

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

Bug: 235842600
Test: presubmit
Change-Id: Ib72596d8fea3a9cefaeff8d54e9dcbb78538cf6a
3 files changed