Use the "connectUnchecked" method instead of custom UncheckedJsonRpcSigner class

[PaulRBerg]

Here's what happened:

1. I started looking at this demo to understand how to use onboard.js in tandem with ethers.js.
2. I noticed that I need to create a custom UncheckedJsonRpcSigner class.
3. I started refactoring it for TypeScript
4. Two hours later, I was done.
5. Shortly afterwards, I realised that I wasted my time. Now, ethers.js provides a connectUnchecked method in the JsonRpcSigner class.

See how Uniswap uses it: https://github.com/Uniswap/uniswap-interface/blob/4078390a4890445d1ff0ed5196fd4cb56a44de87/src/utils/index.ts#L28-L30

[lnbc1QWFyb24]

Ahh man sorry you spent all of that time refactoring that class to TypeScript. It's great that they have that connectUnchecked method now. We will get this updated, thanks mate!

[Adamj1232]

We have updated to the latest Ethers provider and all seems to be working as expected. Thanks again for the feedback!