CAddrMan::m_asmap is now set directly in AppInitMain() so CConnMan::SetAsmap() is no longer required.
Partial backport of core#22791:
https://github.com/bitcoin/bitcoin/pull/22791/commits/593247872decd6d483a76e96d79433247226ad14
Depends on D12291.