Delete travis config.
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 48912fc..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,87 +0,0 @@
-#  Copyright 2016 Google Inc.
-#
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
-#
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-#
-language: objective-c
-sudo: false
-osx_image: xcode8.3
-matrix:
-  global:
-    rvm:
-      - 2.5.3
-  include:
-    - env:
-        - DESTINATION="OS=8.1,name=iPhone 4s" SDK=iphonesimulator10.3 TYPE="FUNCTIONAL"
-    - env:
-        - DESTINATION="OS=8.1,name=iPhone 4s" SDK=iphonesimulator10.3 TYPE="UNIT"
-    - env:
-        - DESTINATION="OS=8.1,name=iPhone 5" SDK=iphonesimulator10.3 TYPE="UNIT"
-    - env:
-        - DESTINATION="OS=8.2,name=iPhone 5s" SDK=iphonesimulator10.3 TYPE="FUNCTIONAL"
-    - osx_image: xcode7.3
-      env:
-        - DESTINATION="OS=8.3,name=iPhone 6" SDK=iphonesimulator9.3 TYPE="CONTRIB"
-    - env:
-        - DESTINATION="OS=8.4,name=iPad Retina" SDK=iphonesimulator10.3 TYPE="FUNCTIONAL"
-    - env:
-        - DESTINATION="OS=9.0,name=iPhone 6s Plus" SDK=iphonesimulator10.3 TYPE="FUNCTIONAL"
-    - env:
-        - DESTINATION="OS=9.0,name=iPhone 4s" SDK=iphonesimulator10.3 TYPE="CONTRIB_SWIFT"
-    - env:
-        - DESTINATION="OS=9.1,name=iPhone 6s" SDK=iphonesimulator10.3 TYPE="UNIT"
-    - env:
-        - DESTINATION="OS=9.3,name=iPhone 6s Plus" SDK=iphonesimulator10.3 TYPE="FUNCTIONAL"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=10.1,name=iPhone 6s" SDK=iphonesimulator11.2 TYPE="CARTHAGE"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=10.2,name=iPhone 7 Plus" SDK=iphonesimulator11.2 TYPE="EXAMPLE_PODS"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=10.3.1,name=iPhone 7 Plus" SDK=iphonesimulator11.2 TYPE="EXAMPLE_PODS_SWIFT"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=11.0.1,name=iPhone 7" SDK=iphonesimulator11.2 TYPE="FUNCTIONAL"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=11.2,name=iPad Air" SDK=iphonesimulator11.2 TYPE="FUNCTIONAL_SWIFT"
-    - osx_image: xcode9.2
-      env:
-        - DESTINATION="OS=11.2,name=iPhone 7 Plus" SDK=iphonesimulator11.2 TYPE="UNIT"
-    - env:
-      - TYPE="RUBY"
-    - osx_image: xcode9.2
-      env:
-      - TYPE="PACKAGE"
-before_install:
-  - |
-      echo "Checking if a CI run is needed post commit: ${TRAVIS_COMMIT_RANGE}"
-      if ! git diff --name-only ${TRAVIS_COMMIT_RANGE} | grep -qvE '(\.md$)|(\.png$)|(\.pdf$)|(\.html$)|^(LICENSE)|^(docs)/'
-      then
-        echo "Only doc files were updated, not running the CI."
-        exit
-      fi
-  - rvm install ruby-2.5.3
-  - rvm use 2.5.3
-  - gem update --system
-  - gem install xcpretty --no-document --quiet
-before_script:
-  - Scripts/setup-earlgrey.sh
-script:
-  - Scripts/travis.sh
-after_failure:
-  - tail -n 200 xcodebuild.log
-branches:
-  only:
-    - master