remove codebeat tip from readme.md & close #37

Former-commit-id: b185c37676ccfa1ae3436ac3a64295056733e2e6

CHANGELOG.md

@@ -47,7 +47,6 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-626 - Refactor DataObj to support cache any type data
 - MS-648 - Improve unittest
 - MS-655 - Upgrade SPTAG
-- MS-666 - Add codebeat icon into README.md
 
 ## New Feature
 - MS-614 - Preload table at startup