Update GLTR Emissions : Increase GHST-USDC to 20%; Retire GHST-MATIC

Authors: Dr Wagmi#6629, MoonGotchi#1234 Gotchi IDs: 16635, 3541 Discourse Thread (Idea/Proposal): https://dao.aavegotchi.com/t/sunset-frens-by-october-1st/4255

I propose that we alter GLTR emissions to optimize GHST liquidity and support the sunsetting of FRENS as outlined in the “Sunset FRENS” signal proposal here: https://snapshot.org/#/aavegotchi.eth/proposal/0x0ad57c0cffa815efcc3f41afac774245777f4bae11fee8d0c0ea956ce34a2427.

The above proposal and this one will accomplish the following:

• Retire the GHST-QUICK liquidity pool liquidity mining rewards (currently FRENS)
• Retire the GHST-WETH liquidity pool mining rewards (currently FRENS)
• Retire the GHST-MATIC liquidity pool mining rewards (currently FRENS + GLTR)
• Add 5% weight to the GHST-USDC LM rewards (taken from GHST-MATIC) for a total of 20% This consolidation will maximize our most successful pool in GHST-USDC. It will eliminate rewards for unpopular pools and help grow our most successful pool. The GHST-WETH pair was borne from the Dinoswap pool which is a failed project. The GHST-MATIC pair is the only one on SushiSwap which is an inactive exchange on Polygon. Neither project offers ongoing LM incentives. The increase in GHST-USDC LM rewards is necessary to offer compensation for the impermanent loss risk incurred by the pair, otherwise single-sided staking for wapGHST will be prioritized and not afford further depth in the GHST-USDC pool. Below is the chart with highlighted changes to GLTR emissions and resultant estimated APYs.