Do not test using PHP 5.6 anymore

sebastianbergmann · sebastianbergmann · commit cd1414369602 · 2016-12-05T08:01:37.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 
 php:
-    - 5.6
     - 7.0
     - 7.1
     - nightly

-Original file line number
+Diff line change
@@ @@ -1,7 +1,6 @@ @@
 language: php
 php:
 -    - 5.6
     - 7.0
     - 7.1
     - nightly