[backport#16402] Remove wallet settings from chainparams

Summary:
Remove wallet settings from chainparams (MarcoFalke)

Pull request description:

Feels a bit odd to have wallet setting in the chainparams, so remove them from there

https://github.com/bitcoin/bitcoin/pull/16402/commits/fa4a605a4c611abe9af4c18aab20f4d1d039170f

Test Plan:

ninja check check-functional

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Subscribers: deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D7061