tag editor: do not convert filenames back to utf8 while reading files using taglib

it was assumed that filesystem encoding is utf8, but that's wrong.
now it's assumed that it matches system encoding.

src/tag_editor.cpp

@@ -974,7 +974,6 @@ bool TagEditor::WriteTags(MPD::Song &s)
 	if (file_is_from_db)
 		path_to_file += Config.mpd_music_dir;
 	path_to_file += s.GetFile();
-	locale_to_utf(path_to_file);
 	TagLib::FileRef f(path_to_file.c_str());
 	if (!f.isNull())
 	{

src/tiny_tag_editor.cpp

@@ -182,7 +182,6 @@ bool TinyTagEditor::GetTags()
 	if (s.isFromDB())
 		path_to_file += Config.mpd_music_dir;
 	path_to_file += s.GetFile();
-	locale_to_utf(path_to_file);
 	
 	TagLib::FileRef f(path_to_file.c_str());
 	if (f.isNull())