Drop QThread::msleep wrapper

src/base/utils/misc.cpp

@@ -36,7 +36,6 @@
 #include <QDebug>
 #include <QProcess>
 #include <QRegularExpression>
-#include <QThread>
 #include <QSysInfo>
 #include <boost/version.hpp>
 #include <libtorrent/version.hpp>
@@ -641,24 +640,6 @@ QSize Utils::Misc::largeIconSize()
 }
 #endif // DISABLE_GUI
 
-namespace
-{
-    //  Trick to get a portable sleep() function
-    class SleeperThread: public QThread
-    {
-    public:
-        static void msleep(unsigned long msecs)
-        {
-            QThread::msleep(msecs);
-        }
-    };
-}
-
-void Utils::Misc::msleep(unsigned long msecs)
-{
-    SleeperThread::msleep(msecs);
-}
-
 QString Utils::Misc::osName()
 {
     // static initialization for usage in signal handler