Remove android-support-test lib from testutils.

Fixed dependencies as needed.

Fixes apct/net/networking_framework_unit_test broken
in aosp/919393.

Test: m tests, checkbuild and Forrest (via gerritt) testing
Bug: 127910239

Change-Id: Ida0ca8012ede9227d204935b11002ddfa2f134ff
Merged-In: Ia825e0926b46855f9056739441cb21a065692076
(Manual partial cherry-pick of ec6bcbce)