thread: remove rootset accessor method

It doesn't buy us much and copying to a new array is slower;
but probably not measurable in real-world use.

1 files changed, 0 insertions, 2 deletions

diff --git a/lib/PublicInbox/SearchThread.pm b/lib/PublicInbox/SearchThread.pm
index d39e9b62..7e89946d 100644
--- a/lib/PublicInbox/SearchThread.pm
+++ b/lib/PublicInbox/SearchThread.pm
@@ -29,8 +29,6 @@ sub new {
         }, $_[0];
 }
 
-sub rootset { @{$_[0]{rootset}} }
-
 sub thread {
         my $self = shift;
         $self->_setup();