LiteLLM removal?

[krrishdholakia]

Hi @akshata29,

I see litellm got merged here #39

But I see it got removed here - 04c45e5.

What was missing for it to be useful? Any feedback here would be helpful.

[akshata29]

We will revisit as at this point, there's significant code changes we have to make (both in API and Promptflow)

[krrishdholakia]

@akshata29 that's fair. why was it not good enough initially?