remove older version of cubic->coeff

src/core/SkGeometry.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGeometry_DEFINED
 #define SkGeometry_DEFINED
 
@@ skipping 86 matching lines @@
 int SkChopQuadAtMaxCurvature(const SkPoint src[3], SkPoint dst[5]);
 
 /** Given 3 points on a quadratic bezier, use degree elevation to
     convert it into the cubic fitting the same curve. The new cubic
     curve is returned in dst[0..3].
 */
 SK_API void SkConvertQuadToCubic(const SkPoint src[3], SkPoint dst[4]);
 
 ///////////////////////////////////////////////////////////////////////////////
 
-/** Convert from parametric from (pts) to polynomial coefficients
-    coeff[0]*T^3 + coeff[1]*T^2 + coeff[2]*T + coeff[3]
-*/
-void SkGetCubicCoeff(const SkPoint pts[4], SkScalar cx[4], SkScalar cy[4]);
-
 /** Set pt to the point on the src cubic specified by t. t must be
     0 <= t <= 1.0
 */
 void SkEvalCubicAt(const SkPoint src[4], SkScalar t, SkPoint* locOrNull,
                    SkVector* tangentOrNull, SkVector* curvatureOrNull);
 
 /** Given a src cubic bezier, chop it at the specified t value,
     where 0 < t < 1, and return the two new cubics in dst:
     dst[0..3] and dst[3..6]
 */
@@ skipping 208 matching lines @@
 private:
     enum {
         kQuadCount = 8, // should handle most conics
         kPointCount = 1 + 2 * kQuadCount,
     };
     SkAutoSTMalloc<kPointCount, SkPoint> fStorage;
     int fQuadCount; // #quads for current usage
 };
 
 #endif