Drop HHVM support

Corey McCormick · Corey McCormick · commit 8cbfc0acd836 · 2016-12-20T18:57:25.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,6 @@ sudo: false
 php:
   - 7.0
   - 7.1
-  - hhvm
 
 before_script:
   - composer install --dev
