Remove node-fetch because fetch has been supported natively

[Keith-CY]

This issue comes from Magickbase/neuron#406

Fetch has been supported since Node.js@18 natively while Neuron uses Electron@30(https://github.com/nervosnetwork/neuron/blob/develop/packages/neuron-wallet/package.json#L96), delivered with Node.js@20, so the external module node-fetch can be removed.

Ref:

• Electron 30: https://www.electronjs.org/blog/electron-30-0
• Fetch: https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API#browser_compatibility

[Keith-CY]

My bad, the lib to remove is https://github.com/nodejs/undici, a temp lib before native node fetch is supported.

[devchenyan]

pr: nervosnetwork/neuron#3213