Update .travis.yml

Author: makasim

.travis.yml

@@ -7,8 +7,8 @@ language: php
 
 matrix:
   include:
-    - php: 5.6
-      env: SYMFONY_VERSION=2.8.* UNIT_TESTS=true
+#    - php: 5.6
+#      env: SYMFONY_VERSION=2.8.* UNIT_TESTS=true
     - php: 7.1
       env: SYMFONY_VERSION=3.0.* PHPSTAN=true
     - php: 7.1