Add Governance proposal to remove multisig

[shahthepro]

• Proposer: 0x6a6d776120f7e4a8dba5f6bf49b85cb340cfe241
• Propose Tx on Etherscan
• Proposal ID: 13686486068088024919790175650189843988847888498567080584391484834887187306764

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Checklist

• [ ] Check proposal args
• [ ] Proposal is executable on fork/sim
• [ ] Fork tests pass on CI after proposal execution
• [ ] After execution, Multisig can no longer schedule/execute on Timelock

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 63.05%. Comparing base (10c5f04) to head (cb52d57). Report is 3 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2115 +/- ## ========================================== + Coverage 61.86% 63.05% +1.19% ========================================== Files 66 66 Lines 3322 3321 -1 Branches 649 648 -1 ========================================== + Hits 2055 2094 +39 + Misses 1264 1224 -40 Partials 3 3 ```

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[sparrowDom]

I've checked that:

• [x] Check proposal args are correct
• [x] Proposal is executable on fork/sim
• [x] Fork tests pass on CI after proposal execution
• [x] After execution, Multisig can no longer schedule/execute on Timelock

[naddison36]

I've verified the proposal

Checklist

• [x] Check proposal args
• [x] Proposal is executable on fork/sim
• [x] Fork tests pass on CI after proposal execution
• [x] After execution, Multisig can no longer schedule/execute on Timelock