Do not allow HHVM to fail

Author: Nyholm

.travis.yml

@@ -26,8 +26,6 @@ branches:
 
 matrix:
     fast_finish: true
-    allow_failures:
-        - php: hhvm
     include:
         - php: 5.5
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" COVERAGE=true TEST_COMMAND="composer test-ci" SYMFONY_VERSION=2.7.*