overidx: remove unused delete_articles sub

This hasn't been used since commit 1b7e935ab1690e28
("searchidx: fix incremental index with indexlevel=basic on v1")

diff --git a/lib/PublicInbox/OverIdx.pm b/lib/PublicInbox/OverIdx.pm
index 7fd1905d62da7877efc58a70a27d80810fb452da..e8df01c4e325d40c3fb9b5c53e4436224d787f87 100644 (file)
--- a/lib/PublicInbox/OverIdx.pm
+++ b/lib/PublicInbox/OverIdx.pm
@@ -320,12 +320,6 @@ INSERT INTO id2num (id, num) VALUES (?,?)
        }
 }
 
-sub delete_articles {
-       my ($self, $nums) = @_;
-       my $dbh = $self->connect;
-       $self->delete_by_num($_) foreach @$nums;
-}
-
 # returns number of removed messages
 # $oid may be undef to match only on $mid
 sub remove_oid {