It's just like add with copied values. If you don't like it then comment it here - modules/Utils/RecordBrowser/RecordBrowser_0.php - line around 1338 (in current dev branch. In the release package it may differ).
if ($this->get_access('add',$this->record)) {
// Base_ActionBarCommon::add('clone',__('Clone'), $this->create_confirm_callback_href(__('You are about to create a copy of this record. Do you want to continue?'),array($this,'clone_record'),array($id)));
}
Regards,
Adam
