Bye bye hhvm

.travis.yml

@@ -1,6 +1,6 @@
 language: php
 dist: trusty
-php: [5.5, 5.6, 7.0, 7.1, 7.2, 7.3, 7.4, hhvm]
+php: [5.5, 5.6, 7.0, 7.1, 7.2, 7.3, 7.4]
 sudo: false
 cache:
   directories: