tests: remove hg10 requirement from test-check-pylint.t
Since pylint does its own directory traversal to find files to check and
doesn't use hg locate command, this requirement is not valid.
See also
a29f071751df.
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}