[wallet] [rpc] Remove duplicate entries in rpcwallet.cpp's CRPCCommand table
Summary:
Remove duplicate listreceivedby{account,label} methods.
Partial backport of Core PR12953
https://github.com/bitcoin/bitcoin/pull/12953/commits/a28b907f8a1e398eb458088a415d002ddbeee491
Depends on D4361
Test Plan:
make check test_runner.py
Reviewers: deadalnix, Fabien, jasonbcox, O1 Bitcoin ABC, #bitcoin_abc
Reviewed By: jasonbcox, O1 Bitcoin ABC, #bitcoin_abc
Differential Revision: https://reviews.bitcoinabc.org/D4368