treewide: use *nix-specific dirname regexps

None of our code elsewhere accounts for non-*nix pathnames and
it's not worth our time to start.  So stop wasting CPU cycles
giving the illusion that we'd care about non-*nix pathnames.

1 files changed, 0 insertions, 1 deletions

diff --git a/t/init.t b/t/init.t
index 7382e05b..efa3314d 100644
--- a/t/init.t
+++ b/t/init.t
@@ -6,7 +6,6 @@ use Test::More;
 use PublicInbox::Config;
 use PublicInbox::TestCommon;
 use PublicInbox::Admin;
-use File::Basename;
 my ($tmpdir, $for_destroy) = tmpdir();
 sub quiet_fail {
         my ($cmd, $msg) = @_;