Split/label some common event scripts

include/event_scripts.h

@@ -1171,7 +1171,7 @@ extern const u8 EventScript_ResetAllMapFlags[];
 extern const u8 EventScript_PalletTown_PlayersHouse_2F_ShutDownPC[];
 
 // field_screen_effect
-extern const u8 EventScript_MomHeal[];
+extern const u8 EventScript_AfterWhiteOutMomHeal[];
 extern const u8 EventScript_AfterWhiteOutHeal[];
 
 // start_menu

include/field_poison.h

@@ -9,7 +9,6 @@ enum {
     FLDPSN_FNT
 };
 
-void ExecuteWhiteOut(void);
 s32 DoPoisonFieldEffect(void);
 
 #endif //GUARD_FIELD_POISON_H