Don't delete tracing when DELETE /scm is called
Don't delete tracing when DELETE /scm is called

Fixes #448

bbauya/kudu,barnyp/kudu,sitereactor/kudu,duncansmart/kudu,WeAreMammoth/kudu-obsolete,juoni/kudu,juvchan/kudu,EricSten-MSFT/kudu,shrimpy/kudu,juoni/kudu,dev-enthusiast/kudu,kenegozi/kudu,mauricionr/kudu,duncansmart/kudu,EricSten-MSFT/kudu,kali786516/kudu,puneet-gupta/kudu,oliver-feng/kudu,juoni/kudu,shanselman/kudu,dev-enthusiast/kudu,sitereactor/kudu,badescuga/kudu,projectkudu/kudu,uQr/kudu,juvchan/kudu,dev-enthusiast/kudu,oliver-feng/kudu,kenegozi/kudu,YOTOV-LIMITED/kudu,MavenRain/kudu,WeAreMammoth/kudu-obsolete,kali786516/kudu,bbauya/kudu,duncansmart/kudu,chrisrpatterson/kudu,chrisrpatterson/kudu,kenegozi/kudu,shibayan/kudu,puneet-gupta/kudu,dev-enthusiast/kudu,EricSten-MSFT/kudu,barnyp/kudu,shanselman/kudu,EricSten-MSFT/kudu,kenegozi/kudu,juvchan/kudu,badescuga/kudu,badescuga/kudu,MavenRain/kudu,mauricionr/kudu,juvchan/kudu,oliver-feng/kudu,mauricionr/kudu,kali786516/kudu,puneet-gupta/kudu,MavenRain/kudu,badescuga/kudu,YOTOV-LIMITED/kudu,WeAreMammoth/kudu-obsolete,shibayan/kudu,projectkudu/kudu,duncansmart/kudu,EricSten-MSFT/kudu,shibayan/kudu,puneet-gupta/kudu,sitereactor/kudu,projectkudu/kudu,MavenRain/kudu,bbauya/kudu,shrimpy/kudu,shibayan/kudu,sitereactor/kudu,bbauya/kudu,kali786516/kudu,puneet-gupta/kudu,chrisrpatterson/kudu,projectkudu/kudu,uQr/kudu,uQr/kudu,juvchan/kudu,shrimpy/kudu,YOTOV-LIMITED/kudu,badescuga/kudu,mauricionr/kudu,barnyp/kudu,chrisrpatterson/kudu,sitereactor/kudu,shrimpy/kudu,barnyp/kudu,shibayan/kudu,juoni/kudu,oliver-feng/kudu,YOTOV-LIMITED/kudu,projectkudu/kudu,uQr/kudu,shanselman/kudu