Fix cinder_volume LVM backend in cookied-mcp-pike-dpdk

Change-Id: I9034ecf022f56c79e5ccacb39308a162a2c6573a
diff --git a/tcp_tests/templates/cookied-mcp-pike-dpdk/_context-environment.yaml b/tcp_tests/templates/cookied-mcp-pike-dpdk/_context-environment.yaml
index ce12fda..53fdd68 100644
--- a/tcp_tests/templates/cookied-mcp-pike-dpdk/_context-environment.yaml
+++ b/tcp_tests/templates/cookied-mcp-pike-dpdk/_context-environment.yaml
@@ -131,7 +131,6 @@
       reclass_storage_name: openstack_compute_rack01
       roles:
       - openstack_compute
-      - features_lvm_backend
       - features_lvm_backend_volume_vdb
       - linux_system_codename_xenial
       interfaces: