Cleanup config left after the format and licence tasks were removed. (#1693)

Author: Bogdan Drutu

buildscripts/travis_script

@@ -54,14 +54,6 @@ case "$TASK" in
   "CHECKER_FRAMEWORK")
     ./gradlew clean assemble -PcheckerFramework=true
     ;;
-  "CHECK_EXAMPLES_LICENSE")
-    curl -L -o checkstyle-8.12-all.jar https://github.com/checkstyle/checkstyle/releases/download/checkstyle-8.12/checkstyle-8.12-all.jar
-    java -DrootDir=. -jar checkstyle-8.12-all.jar -c buildscripts/checkstyle.xml examples/src/
-    ;;
-  "CHECK_EXAMPLES_FORMAT")
-    curl -L -o google-java-format-1.5-all-deps.jar https://github.com/google/google-java-format/releases/download/google-java-format-1.5/google-java-format-1.5-all-deps.jar
-    java -jar google-java-format-1.5-all-deps.jar --set-exit-if-changed --dry-run `find examples/src/ -name '*.java'`
-    ;;
   "BUILD_EXAMPLES_GRADLE")
     pushd examples && ./gradlew clean assemble --stacktrace && ./gradlew check && ./gradlew verGJF && popd
     ;;