[Resource] update testcases for resource mgmt clients (#35563)

* update-testcase

* remove deprecated testcases

* Update test_mgmt_resource_private_link.py

Author: ChenxiJiang333

sdk/resources/azure-mgmt-resource/assets.json

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "python",
   "TagPrefix": "python/resources/azure-mgmt-resource",
-  "Tag": "python/resources/azure-mgmt-resource_890b062016"
+  "Tag": "python/resources/azure-mgmt-resource_89dd6d2402"
 }