Remove unnecessary code.

- ui_allow_classchange already set in disableClassMenu.gsc.
- scr_oldschool has no effect at all.

maps/mp/gametypes/hns.gsc

@@ -103,9 +103,6 @@ main()
 	// Don't show perks
 	SetDvar("scr_showperksonspawn", 0);
 
-	// Don't allow class change
-	SetDvar("ui_allow_classchange", 0);
-
 	// event handlers
 	//level.onXPEvent = ::onXPEvent;
 

maps/mp/mods/disableClassMenu.gsc

@@ -4,11 +4,7 @@
 
 disableClassMenu()
 {
-	// https://github.com/promod/CoD4-Mod-Tools/blob/e88c6f106cb124547e514e658001fcdc4c4e15f3/raw/ui_mp/choices_setup_teams.menu#L57
-	SetDvar("scr_oldschool", 1);
-
-	// found in https://github.com/promod/CoD4-Mod-Tools/blob/e88c6f106cb124547e514e658001fcdc4c4e15f3/raw/ui_mp/scriptmenus/ingame.menu#L94
-	// but it's probably no longer in use seeing as the whole file has been commented out.
+	// This DVar has been reimplemented in our custom ui_mp/scriptmenus/class.menu.
 	SetDvar("ui_allow_classchange", 0);
 
 	level.originalAllies = level.allies;
@@ -17,7 +13,6 @@ disableClassMenu()
 	level.allies = ::classMenu_menuAllies;
 	level.axis = ::classMenu_menuAxis;
 	level.autoAssign = ::classMenu_menuAutoAssign;
-
 }