Remove last empty allOf (#5513)

* operation IDs updated

* updated OperationListResult definition

* review points implemented

* referencing CloudError, ApiVersionParameter, ResourceGroupNameParameter, SubscriptionIdParameter from common-types

* reverting cloudError refs

* prettify json

* removed empty allOf

* validation checks

* readme.go.md fixed

* remove one last empty allOf

Co-authored-by: Devanshu Singh <devasingh@microsoft.com>

specification/orbital/resource-manager/Microsoft.Orbital/preview/2021-04-04-preview/orbital.json

@@ -1440,11 +1440,7 @@
       ],
       "properties": {
         "contactProfile": {
-          "allOf": [
-            {
-              "$ref": "#/definitions/ResourceReference"
-            }
-          ],
+          "$ref": "#/definitions/ResourceReference",
           "description": "The reference to the contact profile resource."
         },
         "groundStationName": {