[backport#19464] net: remove -banscore configuration option
Summary:
06059b0c2a6c2db70c87a7715f8a344a13400fa1 net: rename DEFAULT_BANSCORE_THRESHOLD to DISCOURAGEMENT_THRESHOLD (Jon Atack)
1d4024bca8086cceff7539dd8c15e0b7fe1cc5ea net: remove -banscore configuration option (Jon Atack)
Pull request description:
per https://github.com/bitcoin/bitcoin/pull/19219#issuecomment-652684340, https://github.com/bitcoin/bitcoin/pull/19219#discussion_r443074487 and https://github.com/bitcoin/bitcoin/pull/19219#issuecomment-652699592. Edit: now split into 3 straightforward PRs: - net: remove -banscore configuration option (this PR) - rpc: deprecate banscore field in getpeerinfo (#19469, *merged*) - gui: no longer display banscores (TBA in the gui repo)
Backport of Core PR19464
Depends on D8798
Test Plan:
ninja all check check-functional
Reviewers: #bitcoin_abc, PiRK
Reviewed By: #bitcoin_abc, PiRK
Differential Revision: https://reviews.bitcoinabc.org/D8799