Remove disabled code from QLibrary autotest

The removed code was already commented-out when it was first added in
2007, and would not form a useful test as it was not followed by any
verification steps.  QLibrary::setLoadHints() is tested elsewhere, so
this code can vanish.

Change-Id: I1c4dcaacaf31b0f38136336414cfbe3de1a406f3
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

tests/auto/corelib/plugin/qlibrary/tst_qlibrary.cpp

@@ -568,11 +568,6 @@ void tst_QLibrary::multipleInstancesForOneLibrary()
     QLibrary lib2(lib);
     //lib2 should be loaded because lib1 was loaded and never unloaded
     QCOMPARE(lib2.isLoaded(), true);
-
-/*
-    lib1.setLoadHints(QLibrary::ResolveAllSymbolsHint);
-    lib2.setLoadHints(QLibrary::ExportExternalSymbolHint);
-*/
 }
 
 QTEST_APPLESS_MAIN(tst_QLibrary)