bbPress.org

add_filter ('bbp_reply_admin_links', 'rew_remove_edit') ;
add_filter ('bbp_topic_admin_links', 'rew_remove_edit') ;

function rew_remove_edit ($links) {
$user_role = bbp_get_user_role( $user_id );
if ($user_role == bbp_get_keymaster_role()) unset ($links['edit']) ;
if ($user_role == bbp_get_moderator_role()) unset ($links['edit']) ;
if ($user_role == bbp_get_participant_role()) unset ($links['edit']) ;
if ($user_role == bbp_get_spectator_role()) unset ($links['edit']) ;
if ($user_role == bbp_get_blocked_role()) unset ($links['edit']) ;
return $links ;	
}

and amend as needed

spectator and blocked not really needed as neither can post, but included for completeness !!