Update to 5.0 auth.

gui.lua

@@ -9,9 +9,7 @@ local ESC = minetest.formspec_escape
 local function make_list(filter)
 	filter = filter or ""
 	local list, n, dropped = { }, 0, false
-	local enumerate, e1, e2, e3 = minetest.get_auth_handler().enumerate_auths
-	if enumerate then e1 = enumerate() else e1, e2, e3 = pairs(minetest.auth_table) end
-	for k in e1, e2, e3 do
+	for k in minetest.get_auth_handler().iterate() do
 		if strfind(k, filter, 1, true) then
 			if n >= MAXLISTSIZE then
 				dropped = true

init.lua

@@ -383,5 +383,3 @@ minetest.after(1, check_temp_bans)
 
 dofile(xban.MP.."/dbimport.lua")
 dofile(xban.MP.."/gui.lua")
-
-minetest.log("action", "[xban2] loaded.")