diff --git a/admin/dst_update.php b/admin/dst_update.php
index <HASH>..<HASH> 100644
--- a/admin/dst_update.php
+++ b/admin/dst_update.php
@@ -26,22 +26,6 @@ $ddd = olson_todst($CFG->dataroot.'/temp/olson.txt');
 
 execute_sql('TRUNCATE TABLE '.$CFG->prefix.'timezone');
 
-$timezone = new stdClass;
-$timezone->year = 1970;
-for($i = -13; $i <= 13; $i += .5) {
-    $timezone->gmtoff  = $i * HOURSECS;
-    $timezone->name    = get_string('timezoneunspecifiedlocation').' / GMT';
-    $timezone->sortkey = 'UNSPECIFIED_'.sprintf('%05d', 13 * HOURSECS + $timezone->gmtoff);
-    if($i < 0) {
-        $timezone->name .= $i;
-    }
-    else if($i > 0) {
-        $timezone->name .= '+'.$i;
-    }
-    insert_record('timezone', $timezone);
-}
-
-
 foreach($ddd as $rec) {
     print_object($rec);
     insert_record('timezone', $rec);
Don't add trivial timezone records in the db, we 're going to handle them manually.