no need to use OUStringHash here anymore

Change-Id: I2faa8c971dc7f4642353dceafa25b9022a0dfd2a
Reviewed-on: https://gerrit.libreoffice.org/67436
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

include/xmloff/xmlimp.hxx

@@ -223,7 +223,7 @@ class XMLOFF_DLLPUBLIC SvXMLImport : public cppu::WeakImplHelper<
     css::uno::Reference< css::xml::sax::XFastDocumentHandler > mxFastDocumentHandler;
     static css::uno::Reference< css::xml::sax::XFastTokenHandler > xTokenHandler;
     static std::unordered_map< sal_Int32, std::pair< OUString, OUString > > aNamespaceMap;
-    static std::unordered_map< OUString, OUString, OUStringHash > aNamespaceURIPrefixMap;
+    static std::unordered_map< OUString, OUString > aNamespaceURIPrefixMap;
     static bool bIsNSMapsInitialized;
 
     static void initializeNamespaceMaps();

vcl/inc/printerinfomanager.hxx

@@ -91,7 +91,7 @@ protected:
         OUString         m_aFile;
         // details other config files that have this printer
         // in case of removal all have to be removed
-        std::unordered_set< OUString, OUStringHash > m_aAlternateFiles;
+        std::unordered_set< OUString > m_aAlternateFiles;
         // group in m_aFile containing the printer
         // this must be unique over all configuration files
         // it usually should be the printer name

vcl/source/window/builder.cxx

@@ -2370,7 +2370,7 @@ namespace BuilderUtils
     {
         using namespace com::sun::star::accessibility;
 
-        static const std::unordered_map<OString, sal_Int16, OStringHash> aAtkRoleToAccessibleRole = {
+        static const std::unordered_map<OString, sal_Int16> aAtkRoleToAccessibleRole = {
             /* This is in atkobject.h's AtkRole order */
             { "invalid",               AccessibleRole::UNKNOWN },
             { "accelerator label",     AccessibleRole::UNKNOWN },

xmloff/source/core/xmlimp.cxx

@@ -86,7 +86,7 @@ using namespace ::xmloff::token;
 
 css::uno::Reference< css::xml::sax::XFastTokenHandler > SvXMLImport::xTokenHandler( new FastTokenHandler() );
 std::unordered_map< sal_Int32, std::pair< OUString, OUString > > SvXMLImport::aNamespaceMap;
-std::unordered_map< OUString, OUString, OUStringHash > SvXMLImport::aNamespaceURIPrefixMap;
+std::unordered_map< OUString, OUString > SvXMLImport::aNamespaceURIPrefixMap;
 const OUString SvXMLImport::aDefaultNamespace = OUString("");
 const OUString SvXMLImport::aNamespaceSeparator = OUString(":");
 bool SvXMLImport::bIsNSMapsInitialized = false;