Remove hhvm build

.travis.yml

@@ -6,7 +6,6 @@ dist: trusty
 php:
   - 7.0
   - 7.1
-  - hhvm
   - nightly
 
 cache:
@@ -22,9 +21,9 @@ matrix:
         - php: nightly
 
 before_script:
-  - if [[ $TRAVIS_PHP_VERSION = hhvm* ]]; then echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi
-  - if [[ $TRAVIS_PHP_VERSION = hhvm* ]]; then echo "extension = mongodb.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi
-  - if [[ $TRAVIS_PHP_VERSION = hhvm* ]]; then echo "extension = amqp.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi
+  - echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - echo "extension = mongodb.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - echo "extension = amqp.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - if [ "$deps" == "low" ]; then composer update --prefer-dist --prefer-lowest --prefer-stable; fi
   - if [ "$deps" != "low" ]; then composer install --prefer-dist; fi