QmlProfiler: Enable on Windows

Replace use of sleep() call with a timer.

src/plugins/qmlprofiler/qmlprofilerengine.cpp

@@ -52,9 +52,6 @@
 
 #include <QProcess>
 
-#ifdef Q_OS_UNIX
-#include <unistd.h> // sleep
-#endif
 
 using namespace QmlProfiler::Internal;
 
@@ -176,9 +173,6 @@ bool QmlProfilerEngine::QmlProfilerEnginePrivate::launchperfmonitor()
     connect(m_process,SIGNAL(finished(int)),q,SLOT(spontaneousStop()));
     m_process->start(m_params.debuggee, arguments);
 
-    // give the process time to start
-    sleep(1);
-
     if (!m_process->waitForStarted()) {
         if (QmlProfilerPlugin::debugOutput)
             qWarning("QmlProfiler: %s failed to start", qPrintable(m_params.displayName));