Remove SVGTests related code from SVGGraphicsElement subclasses

Source/core/svg/SVGClipPathElement.h

Index: Source/core/svg/SVGClipPathElement.h
diff --git a/Source/core/svg/SVGClipPathElement.h b/Source/core/svg/SVGClipPathElement.h
index ef619ef7cfec96012ec46b2c20b9e327e2725feb..c5bbb882a8ce8566049f440509c799363037dc73 100644
--- a/Source/core/svg/SVGClipPathElement.h
+++ b/Source/core/svg/SVGClipPathElement.h
@@ -53,11 +53,6 @@ private:
         DECLARE_ANIMATED_ENUMERATION(ClipPathUnits, clipPathUnits, SVGUnitTypes::SVGUnitType)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
-
-    // SVGTests
-    virtual void synchronizeRequiredFeatures() { SVGTests::synchronizeRequiredFeatures(this); }
-    virtual void synchronizeRequiredExtensions() { SVGTests::synchronizeRequiredExtensions(this); }
-    virtual void synchronizeSystemLanguage() { SVGTests::synchronizeSystemLanguage(this); }
 };
 
 }