Remove Travis CI - Open Source love is gone

.travis.yml

@@ -1,48 +0,0 @@
-language: android
-jdk: oraclejdk8
-
-before_cache:
-  # Do not cache a few Gradle files/directories (see https://docs.travis-ci.com/user/languages/java/#Caching)
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-
-cache:
-  directories:
-    # Android SDK
-    - $HOME/android-sdk-dl
-    - $HOME/android-sdk
-
-    # Gradle dependencies
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-
-    # Android build cache (see http://tools.android.com/tech-docs/build-cache)
-    - $HOME/.android/build-cache
-
-install:
-  # Download and unzip the Android SDK tools (if not already there thanks to the cache mechanism)
-  # Latest version available here: https://developer.android.com/studio/index.html#downloads
-  - if test ! -e $HOME/android-sdk-dl/sdk-tools.zip ; then curl https://dl.google.com/android/repository/sdk-tools-linux-3859397.zip > $HOME/android-sdk-dl/sdk-tools.zip ; fi
-  - unzip -qq -n $HOME/android-sdk-dl/sdk-tools.zip -d $HOME/android-sdk
-
-  # Install or update Android SDK components (will not do anything if already up to date thanks to the cache mechanism)
-  - echo y | $HOME/android-sdk/tools/bin/sdkmanager 'tools' > /dev/null
-  - echo y | $HOME/android-sdk/tools/bin/sdkmanager 'platform-tools' > /dev/null
-  - echo y | $HOME/android-sdk/tools/bin/sdkmanager 'build-tools;26.0.2' > /dev/null
-  - echo y | $HOME/android-sdk/tools/bin/sdkmanager 'platforms;android-27' > /dev/null
-  - echo y | $HOME/android-sdk/tools/bin/sdkmanager 'extras;google;m2repository' > /dev/null
-
-branches:
-  except:
-    - gh-pages
-    - l10n_master
-    - crowdin
-
-env:
-  global:
-    - ANDROID_HOME=$HOME/android-sdk
-  matrix:
-    - TASK="clean lintFlavorDefaultDebug --stacktrace"
-    - TASK="clean build check -x lint --stacktrace"
-
-script: "./gradlew --no-daemon --parallel $TASK"