### Check for existing issues

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

### What happened?

https://docs.litellm.ai/docs/proxy/model_management

Cant delete json keys for the models on the UI.

### Steps to Reproduce

When on UI, when updating any of the JSON (model json and litellm params), when removing a key, it keeps the key.

Example:

{ ..., "abc": 123, "someKey": true }

Editing to:

{ ..., "abc": 123 }

After saving it keeps "someKey"

### Relevant log output

```shell

```

### What part of LiteLLM is this about?

UI Dashboard

### What LiteLLM version are you on ?

v1.93.0

### Twitter / LinkedIn details

_No response_