Revert "Blacklist test failing on host."

This reverts commit d5b52c57.

The test failure should be fixed by http://aosp/903874 , which
made Android behave more like host.

See tests in http://aosp/904113 .

Test: treehugger
Change-Id: I312fd06469892a254d4a98d3369c319b1967cfa6