[TL02]Remove hidden API usage of NetworkAgent

The connection service will become the mainline module.
Remove the hidden API usage of NetworkAgent.

Bug: 170598012
CTS-Coverage-Bug: 170598012
Test: atest FrameworksNetTests FrameworksTelephonyTests
      atest FrameworksWifiTests
Change-Id: I4e4040ae7f94bdf479c7df9ec2ffabafbe06331c
Merged-In: I4e4040ae7f94bdf479c7df9ec2ffabafbe06331c
6 files changed
tree: da2acde72598abd361e32328151100e5c6153ae8
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING