Do not run tests with allowed failures on maintenance branch

Signed-off-by: Michal Čihař <michal@cihar.com>

.travis.yml

@@ -10,8 +10,6 @@ php:
   - "5.5"
   - "5.4"
   - "5.3"
-  - hhvm
-  - nightly
 
 sudo: false
 
@@ -53,18 +51,6 @@ after_script:
   - if [ -f vendor/bin/coveralls ] ; then php vendor/bin/coveralls -v || true ; fi
   - if [ -f php.log ] ; then cat php.log ; fi
 
-matrix:
-  allow_failures:
-    - php: 5.6
-      env: PHPUNIT_ARGS="--group selenium" SELENIUM="yes"
-    - php: hhvm
-      env: PHPUNIT_ARGS="--exclude-group selenium"
-    - php: nightly
-      env: PHPUNIT_ARGS="--exclude-group selenium"
-  fast_finish: true
-  include:
-    - php: 5.6
-      env: PHPUNIT_ARGS="--group selenium" SELENIUM="yes"
 cache:
   directories:
     - $HOME/.composer/cache/