Revert "[SPARK-12829] Turn Java style checker on"

This reverts commit 591c88c9. `lint-java` doesn't work on a machine with a clean Maven cache.

dev/run-tests.py

@@ -538,7 +538,8 @@ def main():
                                 or f.endswith("checkstyle.xml")
                                 or f.endswith("checkstyle-suppressions.xml")
                                 for f in changed_files):
-        run_java_style_checks()
+        # run_java_style_checks()
+        pass
     if not changed_files or any(f.endswith(".py") for f in changed_files):
         run_python_style_checks()
     if not changed_files or any(f.endswith(".R") for f in changed_files):