cuspymd opened a new pull request #4121: URL: https://github.com/apache/zeppelin/pull/4121
### What is this PR for? Polish server and service package codes of zeppelin-server - Delete unused import - Delete and optimize redundant codes - Add `final` keyword to some variables that have unchanged reference. ### What type of PR is it? [Refactoring] ### What is the Jira issue? * [ZEPPELIN-5376] Polish server and service package codes of zeppelin-server ### How should this be tested? * CI ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
