remove brew cache

.travis.yml

     - $HOME/.gradle/wrapper/
     - $HOME/.gradle/nodejs/
     - $HOME/.android/build-cache
-    - node_modules
     - $HOME/.m2
     - $ANDROID_HOME/licenses/
-    - $HOME/Library/Caches/Homebrew
-    - /usr/local/Cellar
 before_cache:
   - rm -rf $HOME/.gradle/caches/modules-2/modules-2.lock
   - rm -rf $HOME/.gradle/caches/*/plugin-resolution/