> ConnectTrace used to subscribe to the mempool's NotifyEntryRemoved
> callback to be notified of transactions removed for conflict. Since
> PerBlockConnectTrace no longer tracks conflicted transactions,
> ConnectTrace no longer requires these notifications.
This is a backport of Core [[https://github.com/bitcoin/bitcoin/pull/17477 | PR17477]] [4 & 5/6]
https://github.com/bitcoin/bitcoin/pull/17477/commits/969b65f3f527631ede1a31c7855151e5c5d91f8f
https://github.com/bitcoin/bitcoin/pull/17477/commits/2dd561f36124972d2364f941de9c3417c65f05b6
Backport note: these 2 commits have been squashed because the first one left an unused private attribute 'pool', causing a warning / error for build-clang
Depends on D8866