Remove root_template and root_environment from capabilities-map.yaml

These values now live in plan-environment.yaml.

Change-Id: I7a9448df7c9f84beaac9238f1278633c3ec5ad28
Closes-bug: #1668953
Depends-On: I961624723d127aebbaacd0c2b481211d83dde3f6

capabilities-map.yaml

@@ -2,12 +2,6 @@
 # repository for deployment using puppet. It groups configuration by topic,
 # describes possible combinations of environments and resource capabilities.
 
-# root_template: identifies repository's root template
-# root_environment: identifies root_environment, this one is special in terms of
-#   order in which the environments are merged before deploying. This one serves as
-#   a base and it's parameters/resource_registry gets overridden by other environments
-#   if used.
-
 # topics:
 # High Level grouping by purpose of environments
 # Attributes:
@@ -38,8 +32,6 @@
 # only when that given environment is used. (resource_type of that environment can
 # be implemented using multiple templates).
 
-root_template: overcloud.yaml
-root_environment: overcloud-resource-registry-puppet.yaml
 topics:
   - title: Base Resources Configuration
     description: