diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 27987d9a76..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,135 +0,0 @@
-language: php
-
-services:
-  - docker
-
-cache:
-  apt: true
-  directories:
-    - $HOME/.npm
-    - vendor
-
-env:
-  global:
-    - LOCAL_DIR: build
-    - NPM_INSTALL: true
-    - WP_INSTALL: true
-    - PHP_FPM_UID: "`id -u`"
-    - PHP_FPM_GID: "`id -g`"
-
-matrix:
-  include:
-    - env: WP_TRAVISCI=travis:js LOCAL_PHP=7.1-fpm WP_INSTALL=false
-      name: "JS Tests"
-    - env: LOCAL_PHPUNIT=6-php-7.1-fpm WP_TRAVISCI=test:php
-      name: "PHPUnit Tests: PHP 7.1"
-    - env: LOCAL_PHP_MEMCACHED=true LOCAL_PHP=5.6-fpm LOCAL_PHPUNIT=4-php-5.6-fpm WP_TRAVISCI=test:php
-      name: "PHPUnit Tests: PHP 5.6 with Memcached"
-    - env: WP_TRAVISCI=travis:phpunit WP_INSTALL=false
-      php: 5.2
-      dist: precise
-      name: "PHPUnit Tests: PHP 5.2"
-  fast_finish: true
-
-before_install:
-  - |
-    if [[ "$WP_TRAVISCI" == "test:php" ]]; then
-      travis_retry svn checkout https://plugins.svn.wordpress.org/wordpress-importer/tags/0.6.3/ tests/phpunit/data/plugins/wordpress-importer
-    fi
-  - |
-    if [[ "$WP_TRAVISCI" != "travis:phpunit" ]]; then
-      curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
-      sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
-      sudo apt-get update
-      sudo apt-get -y -o Dpkg::Options::="--force-confnew" install docker-ce
-    fi
-  - |
-    sudo rm /usr/local/bin/docker-compose
-    curl -L https://github.com/docker/compose/releases/download/1.24.0/docker-compose-`uname -s`-`uname -m` > docker-compose
-    chmod +x docker-compose
-    sudo mv docker-compose /usr/local/bin
-  - |
-    if [[ "$WP_TRAVISCI" == "travis:phpunit" ]]; then
-      mysql -u root -e "CREATE DATABASE wordpress_tests;"
-      cp wp-tests-config-sample.php wp-tests-config.php
-      sed -i "s/youremptytestdbnamehere/wordpress_tests/" wp-tests-config.php
-      sed -i "s/yourusernamehere/root/" wp-tests-config.php
-      sed -i "s/yourpasswordhere//" wp-tests-config.php
-      travis_retry svn checkout https://plugins.svn.wordpress.org/wordpress-importer/tags/0.6.3/ tests/phpunit/data/plugins/wordpress-importer
-    fi
-
-before_script:
-  - npm --version
-  - node --version
-  - nvm install
-  - |
-    if [[ "$WP_TRAVISCI" == "travis:phpunit" ]]; then
-      phpenv config-rm xdebug.ini
-      mysql --version
-      phpenv versions
-      php --version
-      php -m
-    fi
-  - |
-    if [[ "$NPM_INSTALL" == "true" ]]; then
-      npm install
-    fi
-  - |
-    if [[ "$WP_TRAVISCI" == "test:php" ]]; then
-      npm run env:start
-      npm run build
-      docker-compose run --rm mysql mysql --version
-      docker-compose run --rm php php --version
-      docker-compose run --rm php php -m
-      docker-compose run --rm phpunit phpunit --version
-    fi
-  - |
-    if [[ "$LOCAL_PHP_MEMCACHED" == "true" ]]; then
-      cp tests/phpunit/includes/object-cache.php build/wp-content/object-cache.php
-      # The memcached server needs to start after `npm run env:start`, which sets up the Docker network.
-      docker run --name memcached --net $(basename "$PWD")_wpdevnet -d memcached
-    fi
-  - |
-    if [[ "$WP_INSTALL" == "true" ]]; then
-      # Run the install process after memcached has started.
-      npm run env:install
-    fi
-  - npm --version
-  - node --version
-  - curl --version
-  - git --version
-  - svn --version
-  - php --version
-  - php -i
-  - locale -a
-
-script:
-  - |
-    if [[ "$WP_TRAVISCI" == "test:php" ]]; then
-      npm run test:php -- --verbose -c phpunit.xml.dist &&
-      npm run test:php -- --verbose -c phpunit.xml.dist --group ajax &&
-      npm run test:php -- --verbose -c tests/phpunit/multisite.xml &&
-      npm run test:php -- --verbose -c tests/phpunit/multisite.xml --group ms-files &&
-      npm run test:php -- --verbose -c phpunit.xml.dist --group external-http &&
-      npm run test:php -- --verbose -c phpunit.xml.dist --group restapi-jsclient &&
-      # __fakegroup__ is excluded to force PHPUnit to ignore the <exclude> settings in phpunit.xml.dist.
-      LOCAL_PHP_XDEBUG=true npm run test:php -- -v --group xdebug --exclude-group __fakegroup__
-    else
-      npm run grunt $WP_TRAVISCI
-    fi
-
-after_script:
-  - |
-    if [[ "$WP_TEST_REPORTER" == "true" ]]; then
-      git clone https://github.com/WordPress/phpunit-test-runner.git test-runner
-      docker-compose run --rm -e WPT_PREPARE_DIR=/var/www -e WPT_TEST_DIR=/var/www php php test-runner/report.php
-    fi
-
-notifications:
-  slack:
-    rooms:
-      secure: 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
-    on_start: never
-    on_failure: always
-    on_success: change
-    on_pull_requests: false