Improve ClientModeImpl unit test coverage

Add some more tests, and remove some dead code.

One removal: updateDefaultRouteMacAddress, which was not called. The
default route handling should be done in connectivity, not here.
Removed a TODO for b/64349637.

Bug: 130023372
Bug: 64349637
Test: frameworks/opt/net/wifi/tests/wifitests/coverage.sh /tmp/after
Change-Id: I3ca0f05c13604d42fcf0e8913bc34fa04e474c13
2 files changed
tree: e2b16729b3af375861ee582426ee8303b24d7673
  1. service/
  2. PREUPLOAD.cfg