Update .travis.yml

Author: tommy-muehle

.travis.yml

@@ -9,17 +9,15 @@ cache:
 matrix:
   include:
     - php: 5.6
+    - php: 7.0
+    - php: 7.1
     - php: hhvm
     - php: nightly
-    - php: 7.1
-    - php: 7.0
-      env: COVERAGE=yes
   allow_failures:
     - php: nightly
     - php: hhvm
   fast_finish: true
 before_install:
-  - if [[ $TRAVIS_PHP_VERSION != hhvm && $TRAVIS_PHP_VERSION != nightly && $COVERAGE != yes ]]; then phpenv config-rm xdebug.ini; fi;
   - composer selfupdate
 install:
   - composer update --no-interaction