Disable the legacy gtest.

Remove everything so people don't accidentally get these includes, and
to make it clear that this isn't used any more.

Bug: http://b/16574165
Change-Id: I9520aed44f0caa94079f2c00da358076bb9ce574
107 files changed
tree: 627ecd0b7ccce9fb41d72c6a656ccc91c8928d54
  1. README.md
README.md

gtest has moved to external/googletest.