Remove RxCpp, which is no longer used.

Do not necromance this without going through the go/android-3p process
again.

Test: treehugger
Change-Id: Id813d74d7d2597e0636b925430117c94bea3fa5a
319 files changed
tree: c0b1aac3621dd301e9fb7add9170d8879cc97cbe
  1. .editorconfig
  2. .gitattributes
  3. .gitignore
  4. .travis.yml
  5. OWNERS