.travis.yml in sidekiq-5.0.2 vs .travis.yml in sidekiq-5.0.3

@@ -4,15 +4,10 @@
 services:
   - redis-server
 before_install:
   - gem install bundler
   - gem update bundler
-matrix:
-  include:
-    - rvm: 2.2.4
-      env: "PERCY_ENABLE=0"
-    - rvm: 2.3.0
-      env: "PERCY_ENABLE=0"
-    - rvm: 2.4.0
-      env: "PERCY_ENABLE=1"
-    - rvm: jruby-9.1.6.0
-      env: "PERCY_ENABLE=0"
+rvm:
+  - 2.2.4
+  - 2.3.0
+  - 2.4.0
+  - jruby-9.1.6.0