searchidx: remove xref3 support for Xapian

It doesn't seem worth storing xref3 data in Xapian now that
the same info is in over.sqlite3.

1 files changed, 0 insertions, 13 deletions

diff --git a/lib/PublicInbox/Smsg.pm b/lib/PublicInbox/Smsg.pm
index c0fd85fd..14086538 100644
--- a/lib/PublicInbox/Smsg.pm
+++ b/lib/PublicInbox/Smsg.pm
@@ -137,17 +137,4 @@ sub subject_normalized ($) {
         $subj;
 }
 
-sub xref3 {
-        my ($self, $doc) = @_;
-        my $end = $doc->termlist_end;
-        my $it = $doc->termlist_begin;
-        $it->skip_to('P');
-        my @ret;
-        for (; $it != $end; $it++) {
-                my $val = $it->get_termname;
-                $val =~ s/\AP// and push @ret, $val;
-        }
-        \@ret;
-}
-
 1;