[PATCH 4/9] convert: remove unused variables capturing :from

[Eric Wong <e@yhbt.net>]

Looking at git history, they were never used.
---
 script/public-inbox-convert | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/script/public-inbox-convert b/script/public-inbox-convert
index 8ac111a2..acecf3d5 100755
--- 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;