Remove unnecessary whitespace changes to gradle file.
Remove unnecessary whitespace changes to gradle file.

REVIEWERS
  Primary:    Kowshick
  Secondary:  Jose

DESCRIPTION
  Cleanup.

UNIT AND/OR INTEGRATION TEST COVERAGE
  No -- Changes do not affect SDK functionality.

appnexus/mobile-sdk-android,appnexus/mobile-sdk-android,appnexus/mobile-sdk-android,appnexus/mobile-sdk-android,appnexus/mobile-sdk-android