Let SVGElement handle SVGLangSpace attributes parsing

Source/core/svg/SVGAElement.cpp

Index: Source/core/svg/SVGAElement.cpp
diff --git a/Source/core/svg/SVGAElement.cpp b/Source/core/svg/SVGAElement.cpp
index 0f360ee2dec248b3fb3ea0170b57c45dad5deb7f..b0287a51b62dc04c9c43915cbf7c2d547c4df094 100644
--- a/Source/core/svg/SVGAElement.cpp
+++ b/Source/core/svg/SVGAElement.cpp
@@ -94,7 +94,6 @@ bool SVGAElement::isSupportedAttribute(const QualifiedName& attrName)
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
         SVGURIReference::addSupportedAttributes(supportedAttributes);
-        SVGLangSpace::addSupportedAttributes(supportedAttributes);
         SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
         supportedAttributes.add(SVGNames::targetAttr);
     }
@@ -115,8 +114,6 @@ void SVGAElement::parseAttribute(const QualifiedName& name, const AtomicString&
 
     if (SVGURIReference::parseAttribute(name, value))
         return;
-    if (SVGLangSpace::parseAttribute(name, value))
-        return;
     if (SVGExternalResourcesRequired::parseAttribute(name, value))
         return;