[Farm]: Shut down RPTR-BUSD farm

Intro

Since BUSD is progressively falling into irrelevancy, we're questioning the relevancy of keeping the RPTR-BUSD farm live (i.e. allocating rewards to it).

Description

BUSD now represents a very small share of BNB Chain's stablecoin volume (3 times lower than USDC, and over 30 times lower than USDT). Thus, keeping a farm involving BUSD seems irrelevant. Cutting it would allow to reduce RPTR's inflation, or to increase APRs of remaining farms (and staking). However, it could cause RPTR price to dip (due to RPTR-BUSD farmers withdrawing en masse).

Consequences

• "Yes, rewards to treasury" means RPTR-BUSD farm will no longer receive rewards, and these rewards will instead be sent to Raptor Treasury
• "Yes, rewards to remaining farms" means RPTR-BUSD farm will no longer receive rewards, and these rewards will be split among remaining farms (+ staking)
• "No, keep farm" means we will keep the RPTR-BUSD farm active, with no change to the way rewards are accrued.