Removed unused properties of InferenceParams & ModelParams

[martindevans]

I noticed that these properties are unused.

[martindevans]

I'm leaving this open for a while, just in case anyone wants to say that actually we should keep these properties and implement them properly.

[saddam213]

Wondering if renaming ModelAlias to Name would be beneficial

Not an issuse for LLamaSharp itself, but if you are dealing with multiple models it could be handy to have a identifier/display name other than filepath

This is also something end users can esily add themselfs, so maybe not

[martindevans]

I'm not against adding something like that. I'm only proposing this PR because right now the properties are totally unused, but if you want to open a PR to implement any of these things I'll happily review it.

For the proposed Name property are you thinking it would tag the LLamaWeights object with the name (public readonly property), to make it easier to identify? That's not a bad idea.

[saddam213]

That what I was thinking, but users could just name thier model files a bit clearer and that would also work

And thinking about it more, Name would really be more of a field requiered if dealing with multiple models, and in that case users would most likely need an Id field too, so they would most likely create thier own classess from the interfaces anyway

Ignore my old man ramblings :p