Deploy failed: The number of Code Interpreter Extensions under this project has reached the limit

I am trying to deploy a custom agent using adk deploy command from clous shell which is giving me the below error.
Deploy failed: Failed to set up agent engine <vertexai.agent_engines._agent_engines.ModuleAgent object at 0x7c437d398f50>: 429 Failed to ImportExtension. The number of Code Interpreter Extensions under this project has reached the limit. 8: Failed to ImportExtension. The number of Code Interpreter Extensions under this project has reached the limit.
I have deleted all the extensions(code interpreter) from vertex AI,[https://console.cloud.google.com/vertex-ai/extensions?project=PROJECT_ID\] but still getting the same error while deploying. I have also increased the quota for ‘Discovery Engine API‘ which was exceeding the threshold value.
Is there any cooling period for extensions limit to reset or is there another extensions were running in behind. I am not getting solution for this.