searchmsg: remove unused EPOCH_822 constant

This hasn't been needed since our Email::Abstract removal
for message threading.

diff --git a/lib/PublicInbox/SearchMsg.pm b/lib/PublicInbox/SearchMsg.pm
index 9dcc1e6dc5e54b8b9ddcebcf5260c63b6cfcb661..5779d1e2ef270aac13c569064bdc0a4852c7e95b 100644 (file)
--- a/lib/PublicInbox/SearchMsg.pm
+++ b/lib/PublicInbox/SearchMsg.pm
@@ -12,7 +12,6 @@ use Date::Parse qw/str2time/;
 use PublicInbox::MID qw/mid_clean/;
 use PublicInbox::Address;
 our $PFX2TERM_RE = undef;
-use constant EPOCH_822 => 'Thu, 01 Jan 1970 00:00:00 +0000';
 use POSIX qw(strftime);
 
 sub new {