Enhancement: Deprecate Sponsor Assets view

[JacobCoffee]

Is your feature request related to a problem? Please describe.

• ProvidedSponsorshipAssetsView is now useless

Describe the solution you'd like

The ProvidedSponsorshipAssetsView should be deprecated now that everything lives in the SponsorshipDetailView. See this comment for more context.

Basic Example

No response

Describe alternatives you've considered

No response

Drawbacks and Impact

No response

Additional context

No response

[SoeAung95]

https://github.com/ton-blockchain/TEPs/blob/master/text/0062-nft-standard.md