v2writable: drop unused $last_commits var

Apparently it's never been used and we write to msgmap directly.

diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 1170f32cd7c6ca8e601d2484ee9b16820ab6d70e..a6f044a898b34e869af480eeac848e532657a236 100644 (file)
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -965,7 +965,6 @@ sub index_sync {
                        --no-notes --no-color --no-abbrev --no-renames);
 
        # work backwards through history
-       my $last_commit = [];
        for (my $i = $epoch_max; $i >= 0; $i--) {
                my $git_dir = git_dir_n($self, $i);
                die "already reindexing!\n" if delete $self->{reindex_pipe};