convert: remove unused variables capturing :from

Looking at git history, they were never used.

diff --git a/script/public-inbox-convert b/script/public-inbox-convert
index 8ac111a26cd98add4a0baa59b6b81ae94105b399..acecf3d54ed5db44b5aa585fe4e939a8f52e5aac 100755 (executable)
--- a/script/public-inbox-convert
+++ b/script/public-inbox-convert
@@ -87,7 +87,6 @@ $clone may not be valid after migrating to v2, not copying
        }
 });
 my $state = '';
-my ($prev, $from);
 my $head = $old->{ref_head} || 'HEAD';
 my ($rd, $pid) = $old->git->popen(qw(fast-export --use-done-feature), $head);
 $v2w->idx_init;
@@ -132,11 +131,6 @@ while (<$rd>) {
                        $last = 'd';
                        next;
                }
-               if (m{^from (:[0-9]+)}) {
-                       $prev = $from;
-                       $from = $1;
-                       # no next
-               }
        }
        last if $_ eq "done\n";
        $w->print($_) or $im->wfail;