Remove hidden connectivity methods usage in ethernet test am: 58e0c49c2e am: 335e3d7e70 am: 0cd0b06061

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1675425

Change-Id: Ibd161192f0c1f681b5442dbf2bee7f60d0dd802b
tree: 90cc2af526444be1f1732cc38c97ce70753862ba
  1. service-t/
  2. tests/