silence Lua warning about nonexistent global `Scoring'

probably overlooked in commit bffa610

Themes/_fallback/BGAnimations/ScreenGameplay decorations/default.lua

@@ -1,16 +0,0 @@
-local t = Def.ActorFrame {};
-
-if( not GAMESTATE:IsCourseMode() ) then
-t[#t+1] = Def.Actor{
-	JudgmentMessageCommand = function(self, params)
-		if params.TapNoteScore and
-		   params.TapNoteScore ~= 'TapNoteScore_Invalid' and
-		   params.TapNoteScore ~= 'TapNoteScore_None'
-		then
-			Scoring[GetUserPref("UserPrefScoringMode")](params, 
-				STATSMAN:GetCurStageStats():GetPlayerStageStats(params.Player))
-		end
-	end;
-};
-end;
-return t;