Remove flaky "clean environment" check. (#193)
Remove flaky "clean environment" check. (#193)

This check is very flaky from OS version to OS version and whether or not you are running under the debugger.
google/google-toolbox-for-mac,thomasvl/google-toolbox-for-mac,thomasvl/google-toolbox-for-mac,google/google-toolbox-for-mac