Drop phpunit 6 checks

SergeyZ · web-flow · commit 756b1d01daa9 · 2017-02-09T12:25:49.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -20,14 +20,6 @@ env:
   - PHPUNIT=5.5.*
   - PHPUNIT=5.6.*
   - PHPUNIT=5.7.*
-  - PHPUNIT=6.0.*
-
-matrix:
-  exclude:
-    - php: 5.6
-      env: PHPUNIT=6.0.*
-    - php: hhvm
-      env: PHPUNIT=6.0.*
 
 cache:
   directories:
