Remove some unused stuff

src/base/bittorrent/private/statistics.cpp

@@ -30,15 +30,12 @@
 
 #include <QDateTime>
 
-#include <libtorrent/session.hpp>
-
 #include "base/bittorrent/session.h"
 #include "base/bittorrent/sessionstatus.h"
 #include "base/profile.h"
 
 static const qint64 SAVE_INTERVAL = 15 * 60 * 1000;
 
-namespace libt = libtorrent;
 using namespace BitTorrent;
 
 Statistics::Statistics(Session *session)

src/base/torrentfileguard.cpp

@@ -86,4 +86,3 @@ CachedSettingValue<TorrentFileGuard::AutoDeleteMode> &TorrentFileGuard::autoDele
     static CachedSettingValue<AutoDeleteMode> setting("Core/AutoDeleteAddedTorrentFile", AutoDeleteMode::Never);
     return setting;
 }
-

src/base/torrentfileguard.h

@@ -26,8 +26,7 @@
  * exception statement from your version.
  */
 
-#ifndef TOFFENTFILEGURAD_H
-#define TOFFENTFILEGURAD_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -82,5 +81,3 @@ private:
     AutoDeleteMode m_mode;
     bool m_wasAdded;
 };
-
-#endif // TOFFENTFILEGURAD_H

src/base/torrentfilter.cpp

@@ -44,7 +44,6 @@ const TorrentFilter TorrentFilter::InactiveTorrent(TorrentFilter::Inactive);
 const TorrentFilter TorrentFilter::ErroredTorrent(TorrentFilter::Errored);
 
 using BitTorrent::TorrentHandle;
-using BitTorrent::TorrentState;
 
 TorrentFilter::TorrentFilter()
     : m_type(All)