Remove insignification from QFocusEvent test on Mac OS X.

This test has one stable failure.  Mark that failure with QEXPECT_FAIL
and re-enable the test.

Task-number: QTBUG-22815
Change-Id: I38445b659235076b00d9dd82d2a824d1caa1439b
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>

tests/auto/other/qfocusevent/qfocusevent.pro

@@ -2,4 +2,3 @@ CONFIG += testcase
 TARGET = tst_qfocusevent
 QT += widgets testlib
 SOURCES += tst_qfocusevent.cpp
-mac: CONFIG += insignificant_test # QTBUG-22815

tests/auto/other/qfocusevent/tst_qfocusevent.cpp

@@ -377,6 +377,9 @@ void tst_QFocusEvent::checkReason_ActiveWindow()
 
 #if defined(Q_OS_IRIX)
     QEXPECT_FAIL("", "IRIX requires explicit activateWindow(), so this test does not make any sense.", Abort);
+#endif
+#ifdef Q_OS_MAC
+    QEXPECT_FAIL("", "QTBUG-22815", Abort);
 #endif
     QTRY_VERIFY(childFocusWidgetOne->focusInEventRecieved);
     QVERIFY(childFocusWidgetOne->focusInEventGotFocus);