infra: remove old variables to skip builds

Author: romani

.travis.yml

@@ -84,10 +84,6 @@ matrix:
 
 
 script:
-  - SKIP_FILES1=".github|codeship-*|buddy.yml|appveyor.yml|circleci|distelli-manifest.yml"
-  - SKIP_FILES2="|fast-forward-merge.sh|LICENSE|LICENSE.apache20|README.md|release.sh|RIGHTS.antlr"
-  - SKIP_FILES3="|shippable.yml|shippable.sh|wercker.yml|wercker.sh|intellij-idea-inspections.xml"
-  - SKIP_FILES=$SKIP_FILES1$SKIP_FILES2$SKIP_FILES3
   - export RUN_JOB=1
   - |
     echo "Installed JVMs: "