.arcconfig

log: drop dead code to concatenate --line-range patterns and pats

It's disabled since 2e45bbd3db7b, and the current implementation is unlikely
to be reused.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}