### Search before asking - [X] I had searched in the [issues](https://github.com/apache/eventmesh/issues?q=is%3Aissue) and found no similar issues. ### Enhancement Request Refactor ConsumerManager ### Describe the solution you'd like 1. remove useless attributes 2. optimize code style ### Are you willing to submit PR? - [x] Yes I am willing to submit a PR!
