[DIP-4] Incentives for DUSD/ETH Sushi pool

This proposal is to re-evaluate the liquidity mining emissions for the DUSD/ETH sushiswap pool.

This pool was commissioned to attract liquidity from other stablecoin/ETH pairs. However, the pool has relatively low liquidity and trade volume. Currently, it is incentivized with 80,000 DFD/week which seems like an overkill for a pool that has about $3million in liquidity. We offer 2 alternatives, either allocate this amount to upcoming ibBTC vaults or refrain from spending it for now; effectively reducing the emissions.