chore: sunset pubkey_to_g1 script + binaries in bolt-contracts

[merklefruit]

• Here: https://github.com/chainbound/bolt/tree/unstable/bolt-contracts/script
• and here: https://github.com/chainbound/bolt/blob/unstable/bolt-contracts/main.go

We don't need these anymore, as the bolt CLI handles registration in a way more ergonomic fashion.

[thedevbirb]

Right, my bad I forgot to clean them up during #392

[merklefruit]

The only annoying thing is that we use pubkey_to_g1_wrapper.sh in BoltValidators*.t.sol here https://github.com/chainbound/bolt/blob/unstable/bolt-contracts/test/BoltValidatorsV2.t.sol#L154

So we either need to move this to a bolt pubkey to-g1 0x... command, but this will also require the bolt cli installed when running tests, or remove the test, or read these g1 points from somewhere else...