Don't test on Ubuntu 14.04 (#259)
Don't test on Ubuntu 14.04 (#259)

Ubuntu 14.04 is about to be end-of-life and Bazel CI will stop supporting it shortly afterwards.

Context: https://groups.google.com/d/msg/bazel-dev/_D6XzfNkQQE/8TNKiNmsCAAJ
android/testing-samples,xCatG/android-testing,xCatG/android-testing,android/testing-samples,android/testing-samples,android/testing-samples,android/testing-samples,xCatG/android-testing,xCatG/android-testing,xCatG/android-testing