Revert "Enable --log-level=info for docker daemons for scalability jenkins jo…"

cluster/common.sh

@@ -528,11 +528,6 @@ EOF
   if [ -n "${KUBELET_TEST_LOG_LEVEL:-}" ]; then
       cat >>$file <<EOF
 KUBELET_TEST_LOG_LEVEL: $(yaml-quote ${KUBELET_TEST_LOG_LEVEL})
-EOF
-  fi
-  if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
-      cat >>$file <<EOF
-DOCKER_TEST_LOG_LEVEL: $(yaml-quote ${DOCKER_TEST_LOG_LEVEL})
 EOF
   fi
   if [ -n "${ENABLE_CUSTOM_METRICS:-}" ]; then