Remove "note skin for beat range", "beat range revision" stuff.

We still load all note skins for a course in advance, and note skins
are still sent through the weird "attack queue" stuff.

stepmania/src/NoteField.h

@@ -39,7 +39,6 @@ public:
 	void DidHoldNote( int iCol, HoldNoteScore score, bool bBright );
 
 	const PlayerState *GetPlayerState() const { return m_pPlayerState; }
-	void RefreshBeatToNoteSkin();
 
 protected:
 	void CacheAllUsedNoteSkins();
@@ -77,16 +76,8 @@ protected:
 	/* All loaded note displays, mapped by their name. */
 	map<CString, NoteDisplayCols *> m_NoteDisplays;
 
-	int m_LastSeenBeatToNoteSkinRev;
-
-	/* Map of beat->NoteDisplayCols.  This is updated whenever GAMESTATE-> changes. */
-	typedef map<float, NoteDisplayCols *> NDMap;
-	void SearchForBeat( NDMap::iterator &cur, NDMap::iterator &next, float Beat );
-	NoteDisplayCols *SearchForBeat( float Beat );
 	NoteDisplayCols *SearchForSongBeat();
 
-	NDMap m_BeatToNoteDisplays;
-
 	NoteDisplayCols *LastDisplay;
 
 	// used in MODE_EDIT