Lavaridge Gym 1F Warp field effect

include/overworld.h

@@ -87,7 +87,6 @@ void player_avatar_init_params_reset(void);
 
 void Overworld_SetFlashLevel(s32 a1);
 u8 Overworld_GetFlashLevel(void);
-void LavaridgeGym1FWarpEffect_4(u16);
 
 void Overworld_SetSavedMusic(u16);
 void Overworld_ChangeMusicToDefault(void);