Document Battle Pyramid

src/pokemon.c

@@ -4,6 +4,7 @@
 #include "battle_controllers.h"
 #include "battle_message.h"
 #include "battle_pike.h"
+#include "battle_pyramid.h"
 #include "battle_setup.h"
 #include "battle_tower.h"
 #include "event_data.h"
@@ -81,9 +82,7 @@ extern u8 StorageGetCurrentBox(void);
 extern void set_unknown_box_id(u8);
 extern void sub_803FA70(u8 battlerId);
 extern u8 sav1_map_get_name(void);
-extern bool8 InBattlePyramid(void);
 extern bool8 sub_806F104(void);
-extern u8 GetTrainerEncounterMusicIdInBattlePyramind(u16 trainerOpponentId);
 extern u8 sub_81D63C8(u16 trainerOpponentId);
 extern void SummaryScreen_SetUnknownTaskId(u8);