SVG: Remove SVGAnimatedPropertyBase::startAnimation and its overrides which are already all NOOP

Source/core/svg/SVGAnimatedIntegerOptionalInteger.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 SVGAnimatedIntegerOptionalInteger::SVGAnimatedIntegerOptionalInteger(SVGElement* contextElement, const QualifiedName& attributeName, float initialFirstValue, float initialSecondValue)
     : SVGAnimatedPropertyCommon<SVGIntegerOptionalInteger>(contextElement, attributeName,
         SVGIntegerOptionalInteger::create(SVGInteger::create(initialFirstValue), SVGInteger::create(initialSecondValue)))
     , m_firstInteger(SVGAnimatedInteger::create(contextElement, attributeName, baseValue()->firstInteger()))
     , m_secondInteger(SVGAnimatedInteger::create(contextElement, attributeName, baseValue()->secondInteger()))
 {
     m_firstInteger->setParentOptionalInteger(this);
     m_secondInteger->setParentOptionalInteger(this);
 }
 
-void SVGAnimatedIntegerOptionalInteger::animationStarted()
-{
-    SVGAnimatedPropertyCommon<SVGIntegerOptionalInteger>::animationStarted();
-    m_firstInteger->animationStarted();
-    m_secondInteger->animationStarted();
-}
-
 void SVGAnimatedIntegerOptionalInteger::setAnimatedValue(PassRefPtr<SVGPropertyBase> value)
 {
     SVGAnimatedPropertyCommon<SVGIntegerOptionalInteger>::setAnimatedValue(value);
     m_firstInteger->setAnimatedValue(currentValue()->firstInteger());
     m_secondInteger->setAnimatedValue(currentValue()->secondInteger());
 }
 
 void SVGAnimatedIntegerOptionalInteger::animationEnded()
 {
     SVGAnimatedPropertyCommon<SVGIntegerOptionalInteger>::animationEnded();
     m_firstInteger->animationEnded();
     m_secondInteger->animationEnded();
 }
 
 bool SVGAnimatedIntegerOptionalInteger::needsSynchronizeAttribute()
 {
     return m_firstInteger->needsSynchronizeAttribute()
         || m_secondInteger->needsSynchronizeAttribute();
 }
 
 }