BUG Remove Behat tests from Travis matrix for SS3

.travis.yml

@@ -5,6 +5,8 @@ language: php
 php:
  - 5.4
 
+dist: precise
+
 env:
   global:
     - CORE_RELEASE=3.1
@@ -16,8 +18,6 @@ matrix:
   include:
     - php: 5.3
       env: DB=MYSQL
-    - php: 5.4
-      env: DB=MYSQL BEHAT_TEST=1
 
 before_script:
  - composer self-update