remove SvtLanguageTable::AddLanguageTag from this list

... I'm about to use.

Change-Id: I4f665e14d0d2161085760a6b31f642e0a8a8345b

unusedcode.easy

@@ -68,7 +68,6 @@ StyleSettings::SetTitleHeight(long)
 StyleSettings::SetUseFlatBorders(bool)
 StyleSettings::SetUseFlatMenus(bool)
 SvpSalInstance::PostedEventsInQueue()
-SvtLanguageTable::AddLanguageTag(LanguageTag const&, rtl::OUString const&)
 SvtListener::IsListening(SvtBroadcaster&) const
 SvxDummyShapeContainer::SvxDummyShapeContainer(com::sun::star::uno::Reference<com::sun::star::drawing::XShapes>)
 SvxNumberFormatShell::IsAdded_Impl(unsigned long)