feature:remove multi_az documentation

Author: mahesh-palkar

model/clusters_mgmt/v1/cluster_type.model

@@ -70,6 +70,9 @@ class Cluster {
 	// Flag indicating if the cluster should be created with nodes in
 	// different availability zones or all the nodes in a single one
 	// randomly selected.
+	// ARO-HCP, this flag is read-only and cannot be configured by the user.
+	// Internally, this field is unused, and since it's a non-pointer boolean,
+	// its default value is false. Using a pointer was avoided due to its broader impact.
 	MultiAZ Boolean
 
 	// Information about the nodes of the cluster.

openapi/aro_hcp/v1alpha1/openapi.json

@@ -1940,7 +1940,7 @@
             "$ref": "#/components/schemas/ManagedService"
           },
           "multi_az": {
-            "description": "Flag indicating if the cluster should be created with nodes in\ndifferent availability zones or all the nodes in a single one\nrandomly selected.",
+            "description": "Flag indicating if the cluster should be created with nodes in\ndifferent availability zones or all the nodes in a single one\nrandomly selected.\nARO-HCP, this flag is read-only and cannot be configured by the user.\nInternally, this field is unused, and since it's a non-pointer boolean,\nits default value is false. Using a pointer was avoided due to its broader impact.",
             "type": "boolean"
           },
           "multi_arch_enabled": {

openapi/clusters_mgmt/v1/openapi.json

@@ -15562,7 +15562,7 @@
             "$ref": "#/components/schemas/ManagedService"
           },
           "multi_az": {
-            "description": "Flag indicating if the cluster should be created with nodes in\ndifferent availability zones or all the nodes in a single one\nrandomly selected.",
+            "description": "Flag indicating if the cluster should be created with nodes in\ndifferent availability zones or all the nodes in a single one\nrandomly selected.\nARO-HCP, this flag is read-only and cannot be configured by the user.\nInternally, this field is unused, and since it's a non-pointer boolean,\nits default value is false. Using a pointer was avoided due to its broader impact.",
             "type": "boolean"
           },
           "multi_arch_enabled": {