remove assigned only but not reference variable
remove assigned only but not reference variable

puneet-gupta/kudu,projectkudu/kudu,projectkudu/kudu,projectkudu/kudu,puneet-gupta/kudu,EricSten-MSFT/kudu,shibayan/kudu,EricSten-MSFT/kudu,shibayan/kudu,shibayan/kudu,puneet-gupta/kudu,projectkudu/kudu,puneet-gupta/kudu,EricSten-MSFT/kudu,shibayan/kudu,EricSten-MSFT/kudu,shibayan/kudu,puneet-gupta/kudu,projectkudu/kudu,EricSten-MSFT/kudu