Revert "Android: skip vulkan tests for tst_qrhiwidget"

Amends feff219aad which didn't really
do the revert for some reason.

This reverts commit bba26d7220.

Reason for revert: Latest emulator update fixed the issue.

Change-Id: I0bc4263eae36c3ff81f235dcfe3bad9b30afd5d8
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>

tests/auto/widgets/widgets/qrhiwidget/tst_qrhiwidget.cpp

@@ -70,9 +70,6 @@ void tst_QRhiWidget::testData()
 #endif
 
 #if QT_CONFIG(vulkan)
-#if defined(Q_OS_ANDROID)
-    qWarning() << "Skipping Vulkan for Android (QTQAINFRA-5971)";
-#else
     // Have to probe to be sure Vulkan is actually working (the test cases
     // themselves will assume QRhi init succeeds).
     if (QVulkanDefaultInstance::instance()) {
@@ -82,7 +79,6 @@ void tst_QRhiWidget::testData()
             QTest::newRow("Vulkan") << QRhiWidget::Api::Vulkan;
     }
 #endif
-#endif
 
 #if QT_CONFIG(metal)
     QRhiMetalInitParams metalInitParams;