Code cleanup on EthernetNetworkFactoryTest am: 18ed8f6680

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1935577

Change-Id: I6592cad26ae748787a60d236f75310a3fcf9ae7b
tree: 599e6b22a63800c25a5494c4b69d24f64ac09187
  1. service-t/
  2. tests/