Remove hidden connectivity methods usage in ethernet test

Bug: 182859030
Test: atest EthernetTrackerTest
Test: 1. remove framework-connectivity.impl from framework bp
      2. cd frameworks/opt/net/ethernet/tests ; mm
Change-Id: Ifaeebfca75dc77eec30dd722ddb3166610795b26
1 file changed
tree: 12836cddf4a56394306a75dcf8103a330a188e26
  1. java/
  2. tests/
  3. .gitignore
  4. Android.bp