### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### What happened?

Once parameter is added to LiteLLM Params it's can't be removed.

{ "input_cost_per_token": 0.00000125, "output_cost_per_token": 0.00001, "api_base": "https://api.openai.com/v1", "custom_llm_provider": "openai", "use_in_pass_through": false, "use_litellm_proxy": false, "merge_reasoning_content_in_choices": false, "model": "gpt-5", "tags": [], "guardrails": [] }

### Steps to Reproduce

1. Go to Model Management 2. Click on Model ID 3. Click on Overview and Edit setting button 4. Add custom parameter like litellm_image_enabled 5. Save it

### Relevant log output

```shell After refreshing UI the LiteLLM Params section removed parameter re-appears ```

### What part of LiteLLM is this about?

UI Dashboard

### What LiteLLM version are you on ?

1.81.16-nightly

### Twitter / LinkedIn details

_No response_