extmsg: drop unused $have_mm variable

We rely on Inbox::mm nowadays.

diff --git a/lib/PublicInbox/ExtMsg.pm b/lib/PublicInbox/ExtMsg.pm
index 167dc5e5d37fe0e2185d2eccbc47ff6f94263131..47f00b5e3ec179f4167deffd433c56b56b712c25 100644 (file)
--- a/lib/PublicInbox/ExtMsg.pm
+++ b/lib/PublicInbox/ExtMsg.pm
@@ -80,7 +80,6 @@ sub ext_msg {
        my $mid = $ctx->{mid};
 
        eval { require PublicInbox::Msgmap };
-       my $have_mm = $@ ? 0 : 1;
        my (@ibx, @found);
 
        $ctx->{www}->{pi_config}->each_inbox(sub {