Removing unused int network score from eth factory am: 68c4a5108b am: 21bbe6f4a5 am: 1c138c9d16

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1891859

Change-Id: I680749fcb1d7d5673806321cf8587461c8fe0a18
tree: 7243bfb213075e82582dd31201e7e7b007b52fec
  1. service-t/
  2. tests/