search: reduce columns stored in Xapian

We can store :bytes and :lines in doc_data since we never
sort or search by them.  We don't have much use for the Date:
stamp at the moment, either.

1 files changed, 3 insertions, 6 deletions

diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index de296e1a..ca389e32 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -8,12 +8,9 @@ use strict;
 use warnings;
 
 # values for searching
-use constant DS => 0; # Date: header in Unix time
-use constant NUM => 1; # NNTP article number
-use constant BYTES => 2; # :bytes as defined in RFC 3977
-use constant LINES => 3; # :lines as defined in RFC 3977
-use constant TS => 4;  # Received: header in Unix time
-use constant YYYYMMDD => 5; # for searching in the WWW UI
+use constant TS => 0;  # Received: header in Unix time
+use constant YYYYMMDD => 1; # for searching in the WWW UI
+use constant NUM => 2; # NNTP article number
 
 use Search::Xapian qw/:standard/;
 use PublicInbox::SearchMsg;