Remove format:arm-id from v4 since api validation service fails to load the spec, causing global outages for RPaaS RPs (Azure#21860)

Author: shavital7

specification/common-types/resource-management/v4/customermanagedkeys.json

@@ -51,7 +51,6 @@
             },
             "userAssignedIdentityResourceId": {
               "type": "string",
-              "format": "arm-id",
               "description": "user assigned identity to use for accessing key encryption key Url. Ex: /subscriptions/fa5fc227-a624-475e-b696-cdd604c735bc/resourceGroups/<resource group>/providers/Microsoft.ManagedIdentity/userAssignedIdentities/myId. Mutually exclusive with identityType systemAssignedIdentity and delegatedResourceIdentity."
             },
             "delegatedIdentityClientId": {

specification/common-types/resource-management/v4/types.json

@@ -14,7 +14,6 @@
         "id": {
           "readOnly": true,
           "type": "string",
-          "format": "arm-id",
           "description": "Fully qualified resource ID for the resource. E.g. \"/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}\""
         },
         "name": {