renamed cs_check, removed nightly test

Author: kokspflanze

.travis.yml

@@ -29,7 +29,7 @@ matrix:
     - php: 7
       env:
         - DEPS=locked
-        - CHECK_CS=true
+        - CS_CHECK=true
         - TEST_COVERAGE=true
     - php: 7
       env:
@@ -52,18 +52,8 @@ matrix:
     - php: 7.2
       env:
         - DEPS=latest
-    - php: nightly
-      env:
-        - DEPS=lowest
-    - php: nightly
-      env:
-        - DEPS=locked
-    - php: nightly
-      env:
-        - DEPS=latest
   allow_failures:
     - php: 7.2
-    - php: nightly
 
 before_install:
   - if [[ $TEST_COVERAGE != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi