searchidx: drop redundant decl in index_git_blob_id

Oddly, Perl did not warn about this.  Spotted while confirming
abbreviated OIDs are also indexed when unabbreviated OIDs
appear.

1 files changed, 0 insertions, 1 deletions

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 86c435fd..1bf471fc 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -715,7 +715,6 @@ sub nr_quiet_rm { delete($_[0]->{-quiet_rm}) // 0 }
 sub index_git_blob_id {
         my ($doc, $pfx, $objid) = @_;
 
-        my $len = length($objid);
         for (my $len = length($objid); $len >= 7; ) {
                 $doc->add_term($pfx.$objid);
                 $objid = substr($objid, 0, --$len);