Remove obsolete logging section

Remove old logging section to reuse it in the new logging config.
Current one is obsolete and was used during pre-mcp & pre-mk20 times with heka.
For now default config for nova control is coming from nova formula.

Change-Id: I750edabe82c9379c951e74cb97523daab732f335
diff --git a/nova/control/cluster.yml b/nova/control/cluster.yml
index dee725d..3b8877d 100644
--- a/nova/control/cluster.yml
+++ b/nova/control/cluster.yml
@@ -29,11 +29,6 @@
       ram_allocation_ratio: ${_param:nova_ram_allocation_ratio}
       disk_allocation_ratio: ${_param:nova_disk_allocation_ratio}
       workers: 8
-      logging:
-      - engine: syslog
-        facility: local0
-        heka:
-          enabled: true
       bind:
         private_address: ${_param:cluster_local_address}
         public_address: ${_param:cluster_vip_address}