Remove moar unused SVG methods

Source/core/svg/SVGTransformDistance.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 175 matching lines @@
         return newTransform.release();
     case SVG_TRANSFORM_SKEWY:
         newTransform->setSkewY(transform->angle() + m_angle);
         return newTransform.release();
     }
 
     ASSERT_NOT_REACHED();
     return newTransform.release();
 }
 
-bool SVGTransformDistance::isZero() const
-{
-    return m_transform.isIdentity() && !m_angle;
-}
-
 float SVGTransformDistance::distance() const
 {
     switch (m_transformType) {
     case SVG_TRANSFORM_MATRIX:
         ASSERT_NOT_REACHED();
     case SVG_TRANSFORM_UNKNOWN:
         return 0;
     case SVG_TRANSFORM_ROTATE:
         return sqrtf(m_angle * m_angle + m_cx * m_cx + m_cy * m_cy);
     case SVG_TRANSFORM_SCALE:
         return static_cast<float>(sqrt(m_transform.a() * m_transform.a() + m_transform.d() * m_transform.d()));
     case SVG_TRANSFORM_TRANSLATE:
         return static_cast<float>(sqrt(m_transform.e() * m_transform.e() + m_transform.f() * m_transform.f()));
     case SVG_TRANSFORM_SKEWX:
     case SVG_TRANSFORM_SKEWY:
         return m_angle;
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 }