unused includes (#1133)

* unused includes

Signed-off-by: Rosen Penev <rosenp@gmail.com>

* Use consistent order of includes

Always include in the following order:
- Own header files
- Standard header files
- System header files
- Project header files (toolkit first)

Exceptions:
- cppunit/extensions/HelperMacros.h must be included after
  header files declaring stream operators
- config.h must be included before its definitions are used

---------

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Co-authored-by: Urs Fleisch <ufleisch@users.sourceforge.net>

taglib/xm/xmfile.cpp

@@ -25,14 +25,13 @@
 
 #include "xmfile.h"
 
+#include <algorithm>
+#include <utility>
+
 #include "tstringlist.h"
 #include "tdebug.h"
-#include "modfileprivate.h"
 #include "tpropertymap.h"
-
-#include <algorithm>
-#include <cstring>
-#include <utility>
+#include "modfileprivate.h"
 
 using namespace TagLib;
 using namespace XM;

taglib/xm/xmfile.h

@@ -27,8 +27,8 @@
 #define TAGLIB_XMFILE_H
 
 #include "tfile.h"
-#include "audioproperties.h"
 #include "taglib_export.h"
+#include "audioproperties.h"
 #include "modfilebase.h"
 #include "modtag.h"
 #include "xmproperties.h"

taglib/xm/xmproperties.cpp

@@ -23,7 +23,6 @@
  *   http://www.mozilla.org/MPL/                                           *
  ***************************************************************************/
 
-
 #include "xmproperties.h"
 
 using namespace TagLib;

taglib/xm/xmproperties.h

@@ -26,8 +26,8 @@
 #ifndef TAGLIB_XMPROPERTIES_H
 #define TAGLIB_XMPROPERTIES_H
 
-#include "taglib.h"
 #include "tstring.h"
+#include "taglib.h"
 #include "audioproperties.h"
 
 namespace TagLib {