Remove unused service and test dependencies

Nothing uses StateMachine in service-connectivity, and
FrameworksNetTestsLib pulled a lot of unused dependencies with
services.core and services.net.

Remove unused dependencies. This helps measure code coverage more
accurately.

Bug: 207020032
Test: atest ConnectivityCoverageTests
Change-Id: I39857865594a3263c4b1deeda23312c8e4f86a77
4 files changed