reverted previous changes (behaviour with monophonic instruments)

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@522 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/instrument.h

@@ -105,15 +105,6 @@ public:
 		return( FALSE );
 	}
 
-	// some monophonic instruments need a certain number of frames for a
-	// transition between notes - such instruments can re-implement this
-	// method for returning how many frames they at least like to have for
-	// transition
-	virtual f_cnt_t desiredTransitionFrames( void ) const
-	{
-		return( 0 );
-	}
-
 	inline virtual bool notePlayHandleBased( void ) const
 	{
 		return( TRUE );