Chore: Remove deprecated interfaces

[VisargD]

• These interfaces are not referenced anywhere in the code. Moreover, the structure of these interfaces are of old format which are no longer valid.

• LLMOptions https://github.com/Portkey-AI/portkey-node-sdk/blob/56d1911739a8201811b69bfad04d56728a281b9a/src/_types/portkeyConstructs.ts#L67-L69

• Constructs https://github.com/Portkey-AI/portkey-node-sdk/blob/56d1911739a8201811b69bfad04d56728a281b9a/src/_types/portkeyConstructs.ts#L9-L24

• ConversationInput https://github.com/Portkey-AI/portkey-node-sdk/blob/56d1911739a8201811b69bfad04d56728a281b9a/src/_types/portkeyConstructs.ts#L57-L60

[dosubot[bot]]

🤖

It's great to see that you've identified these deprecated interfaces and are looking to remove them. Your contribution will help keep the codebase clean and maintainable. If you'd like to proceed with creating a pull request for this change, it would be a valuable addition to the repository. Thank you for your willingness to contribute!

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