propagate msgbox macro

data/maps/Route4/scripts.inc

@@ -5,16 +5,13 @@ Route4_EventScript_167F8B:: @ 8167F8B
 	end
 
 Route4_EventScript_167F8C:: @ 8167F8C
-	loadword 0, gUnknown_81838D7
-	callstd 2
+	msgbox gUnknown_81838D7, 2
 	end
 
 Route4_EventScript_167F95:: @ 8167F95
-	loadword 0, gUnknown_818399B
-	callstd 3
+	msgbox gUnknown_818399B, 3
 	end
 
 Route4_EventScript_167F9E:: @ 8167F9E
-	loadword 0, gUnknown_81839B4
-	callstd 3
+	msgbox gUnknown_81839B4, 3
 	end