remove defunct env var

Signed-off-by: Erin Schnabel <schnabel@us.ibm.com>

Author: Erin Schnabel

mediator-wlpcfg/startup.sh

@@ -40,7 +40,6 @@ if [ "$ETCDCTL_ENDPOINT" != "" ]; then
   export MAP_SERVICE_URL=$(etcdctl get /map/url)
   export PLAYER_SERVICE_URL=$(etcdctl get /player/url)
 
-  export LOGSTASH_ENDPOINT=$(etcdctl get /logstash/endpoint)
   export LOGMET_HOST=$(etcdctl get /logmet/host)
   export LOGMET_PORT=$(etcdctl get /logmet/port)
   export LOGMET_TENANT=$(etcdctl get /logmet/tenant)