Revert "Tune ram usage for galera on virtual-mcp-pike-ovs"

This break logic of defining galera:master node, as currently many
places rely on galera:master and do not check for enabled flag.
For example
https://gerrit.mcp.mirantis.net/gitweb?p=mcp-ci/pipeline-library.git;a=blob;f=src/com/mirantis/mk/Orchestrate.groovy;h=664871f1f02a051f2adbbdd191fdfa7f25e4c516;hb=80c1d375f75a2b86292c9d8e40a63e5f8b47cde2#l95

This reverts commit 363e8b9dc97153b6de6f4f27fc56b24d25fd6b81.

Change-Id: I2d4f314ecbf0cca141deb41ab563a861b1123a8d
diff --git a/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml b/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
index 67d9437..e4923a0 100644
--- a/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
+++ b/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
@@ -47,13 +47,6 @@
   _param:
     keepalived_vip_interface: ens4
     apache_manila_api_address: ${_param:cluster_local_address}
-  galera:
-    master:
-      innodb_buffer_pool_size: 1024M
-      max_connections: 1000
-    slave:
-      innodb_buffer_pool_size: 1024M
-      max_connections: 1000
   linux:
     system:
       package: