.travis.yml file is out of date, auto-updating .travis.yml file.

.travis.yml

@@ -98,7 +98,7 @@ before_script:
   - mysql -e "SELECT VERSION();"
 
   # configure mysql
-  - mysql -e "SET GLOBAL sql_mode = 'NO_ENGINE_SUBSTITUTION,ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES'" # Travis default
+  - mysql -e "SET GLOBAL sql_mode = 'NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES'" # Travis default
 
   # Uncomment to enable sql_mode STRICT_TRANS_TABLES (new default in Mysql 5.6)
   #- mysql -e "SET GLOBAL sql_mode = 'NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES'"