Disabling saving failed containers.

We clearly don't have enough space for that, if we are to run our tests every few minutes.
We can revisit that later and automatically purge old containers for example.

tools/jenkins/run_jenkins.sh

@@ -73,15 +73,7 @@ then
   DOCKER_CID=`cat docker.cid`
   docker kill $DOCKER_CID
   docker cp $DOCKER_CID:/var/local/git/grpc/report.xml $git_root
-  if [ "$DOCKER_FAILED" == "" ]
+  docker rm $DOCKER_CID
-  then
-    echo "Docker finished successfully, deleting the container $DOCKER_CID"
-    docker rm $DOCKER_CID
-  else
-    echo "Docker exited with failure, keeping container $DOCKER_CID."
-    echo "You can SSH to the worker and use 'docker commit CID YOUR_IMAGE_NAME' and 'docker run -i -t YOUR_IMAGE_NAME bash' to debug the problem."
-    exit 1
-  fi
 
 elif [ "$platform" == "windows" ]
 then