Merge changes Ic0ee9c08,Ia3e82682,I8d8ab547,I8f2cd0a0,I45823b0c,Ie22ac47e

* changes:
  cleanup: Silence an unused-parameter warning
  cleanup: Get rid of some unused-warnings
  cleanup: Remove unused parameter in ConsoleCredentialsProvider
  cleanup: Drop unused parameter on DhtPackParser
  cleanup: Remove unneeded parameter to private method in RefUpdateTest
  cleanup: Remove unnecessary @SuppressWarnings