PresetPreviewPlayHandle: removed

Removed unused class PresetPreviewPlayHandle with all its sub- and
helper-classes. Lots of dirty code this way gets cleaned up/removed.

Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>

include/preset_preview_play_handle.h

@@ -1,63 +0,0 @@
-/*
- * preset_preview_play_handle.h - play-handle for playing a short preview-sound
- *                                of a preset or a file processed by a plugin
- *
- * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
- * 
- * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program (see COPYING); if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301 USA.
- *
- */
-
-
-#ifndef _PRESET_PREVIEW_PLAY_HANDLE_H
-#define _PRESET_PREVIEW_PLAY_HANDLE_H
-
-#include "note_play_handle.h"
-
-
-class instrumentTrack;
-class previewTrackContainer;
-
-
-class presetPreviewPlayHandle : public playHandle
-{
-public:
-	presetPreviewPlayHandle( const QString & _preset_file,
-						bool _load_by_plugin = false );
-	virtual ~presetPreviewPlayHandle();
-
-	virtual void play( sampleFrame * _working_buffer );
-	virtual bool done( void ) const;
-
-	virtual bool isFromTrack( const track * _track ) const;
-
-	static void init( void );
-	static void cleanup( void );
-	static ConstNotePlayHandleList nphsOfInstrumentTrack(
-						const instrumentTrack * _ct );
-
-
-private:
-	static previewTrackContainer * s_previewTC;
-
-	notePlayHandle * m_previewNote;
-
-} ;
-
-
-#endif