add ability to remove imported public keys/addresses (or even privkeys) without the need of (hex) editing wallet.dat
Is your feature request related to a problem? Please describe.
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I have an address in my wallet imported with bitcoin-cli importaddress that is read-only and shows up between my spendable UTXOs
Describe the solution you'd like
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bitcoin-cli removepubkey, bitcoin-cli removeaddress
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Additional context
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