QFileInfoGatherer: remove unused members userId/groupId

None of the code references these, so remove.

Change-Id: Ie48d30b49c644f093df9f42c8d087751c4e980ba
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/widgets/dialogs/qfileinfogatherer.cpp

@@ -79,9 +79,6 @@ QFileInfoGatherer::QFileInfoGatherer(QObject *parent)
 {
 #ifdef Q_OS_WIN
     m_resolveSymlinks = true;
-#elif !defined(Q_OS_INTEGRITY)
-    userId = getuid();
-    groupId = getgid();
 #endif
 #ifndef QT_NO_FILESYSTEMWATCHER
     watcher = new QFileSystemWatcher(this);

src/widgets/dialogs/qfileinfogatherer_p.h

@@ -194,10 +194,6 @@ private:
     bool m_resolveSymlinks;
     QFileIconProvider *m_iconProvider;
     QFileIconProvider defaultProvider;
-#ifndef Q_OS_WIN
-    uint userId;
-    uint groupId;
-#endif
 };
 #endif // QT_NO_FILESYSTEMMODEL