clean up old rbac & nav

Author: micheleRP

modules/security/pages/authorization/rbac/rbac.adoc

@@ -1,7 +1,7 @@
 = Configure RBAC in the Control Plane
 :description: Configure RBAC in the control plane to manage access to organization-level resources like clusters, resource groups, and networks.
 
-Use Redpanda Cloud role-based access control (RBAC) in the glossterm:control plane[] to manage and restrict access to resources in your organization. For example, you could grant everyone access to clusters in a development resource group while limiting access to clusters in a production resource group. Or, you could limit access to geographically-dispersed clusters in accordance with data residency laws.  
+Use Redpanda Cloud role-based access control (RBAC) in the glossterm:control plane[] to manage and restrict access to resources in your organization. For example, you could grant everyone access to clusters in a development resource group while limiting access to clusters in a production resource group. Or, you could limit access to geographically-dispersed clusters in accordance with data residency laws.
 
 The following resources can be assigned as the scope of a role: