Base: Remove StopWatch

StopWatch is now used on single place only, remove it in favour of TimeElapsed

src/Base/Tools.cpp

@@ -27,7 +27,6 @@
 #include <locale>
 #include <iostream>
 #include <QDateTime>
-#include <QElapsedTimer>
 #endif
 
 #include "PyExport.h"
@@ -373,62 +372,3 @@ std::string Base::Tools::currentDateTimeString()
         .toString(Qt::ISODate)
         .toStdString();
 }
-
-// ----------------------------------------------------------------------------
-
-using namespace Base;
-
-struct StopWatch::Private
-{
-    QElapsedTimer t;
-};
-
-StopWatch::StopWatch()
-    : d(new Private)
-{}
-
-StopWatch::~StopWatch()
-{
-    delete d;
-}
-
-void StopWatch::start()
-{
-    d->t.start();
-}
-
-int StopWatch::restart()
-{
-    return d->t.restart();
-}
-
-int StopWatch::elapsed()
-{
-    return d->t.elapsed();
-}
-
-std::string StopWatch::toString(int ms) const
-{
-    int total = ms;
-    int msec = total % 1000;
-    total = total / 1000;
-    int secs = total % 60;
-    total = total / 60;
-    int mins = total % 60;
-    int hour = total / 60;
-    std::stringstream str;
-    str << "Needed time: ";
-    if (hour > 0) {
-        str << hour << "h " << mins << "m " << secs << "s";
-    }
-    else if (mins > 0) {
-        str << mins << "m " << secs << "s";
-    }
-    else if (secs > 0) {
-        str << secs << "s";
-    }
-    else {
-        str << msec << "ms";
-    }
-    return str.str();
-}