Remove Unused Code From EthernetNetworkFactory am: 0ba7e4cc58

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1722876

Change-Id: I45330b6646697a7b7655f764bcb8c87b2a1635e7
tree: 9afbf60464ab596ed1600c8a8abd3ad316506fad
  1. service-t/
  2. tests/