No staking has been depricated, it's for the yfi v... @yearnfinance

Yes, staking has been deprecated for the YFI Vault at Yearn.finance. This means that users will no longer be able to earn rewards by staking their YFI tokens in the Vault. Instead, users will now be able to earn rewards by providing liquidity to the YFI/YFI Vault Uniswap pool. This change was made in order to make the YFI Vault more accessible to a wider range of users, as staking requires users to lock up their tokens for a period of time in order to earn rewards. By providing liquidity to the Uniswap pool, users can earn rewards without having to lock up their tokens and can withdraw their tokens at any time.

Alright thanks