Remove SVGLangSpace IDL interface

Source/core/svg/SVGLineElement.h

Index: Source/core/svg/SVGLineElement.h
diff --git a/Source/core/svg/SVGLineElement.h b/Source/core/svg/SVGLineElement.h
index 1027644a931c52b1c6ccd976989afb10f563da43..1a28894d52ed57c8b91a97f58a28f3a62c52502d 100644
--- a/Source/core/svg/SVGLineElement.h
+++ b/Source/core/svg/SVGLineElement.h
@@ -24,7 +24,6 @@
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
-#include "core/svg/SVGLangSpace.h"
 #include "core/svg/SVGStyledTransformableElement.h"
 #include "core/svg/SVGTests.h"
 
@@ -32,7 +31,6 @@ namespace WebCore {
 
 class SVGLineElement FINAL : public SVGStyledTransformableElement,
                              public SVGTests,
-                             public SVGLangSpace,
                              public SVGExternalResourcesRequired {
 public:
     static PassRefPtr<SVGLineElement> create(const QualifiedName&, Document*);