PIP-91: Revoke "PIP-84 Increase Approval Threshold For Financially Sensitive Proposals"

This proposal will revoke the vote for PIP-84 and return all votes to a 50%+1 approval threshold.

Link to PIP-84: https://snapshot.org/#/jpeg%E2%80%99d.eth/proposal/0x68b0a3e515e0bc9032e8fea2808e38cfd6d3fdf0d87f71d81fabbd04e3f28231