test: Remove QSKIP from tst_QLocale::windowsDefaultLocale()

This test actually passes on Windows, so removing the QSKIP

Task-number: QTBUG-24543
Change-Id: Ic2666665f2882392aec92a665f51d6c5dd3355f8
Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

tests/auto/corelib/tools/qlocale/tst_qlocale.cpp

@@ -1250,8 +1250,6 @@ public:
 void tst_QLocale::windowsDefaultLocale()
 {
 #ifdef Q_OS_WIN
-    QSKIP("This test currently fails - QTBUG-24543");
-
     RestoreLocaleHelper systemLocale;
     // set weird system defaults and make sure we're using them
     setWinLocaleInfo(LOCALE_SDECIMAL, QLatin1String("@"));