Remove GetQuadPointsFromDictionary().

Commit 1638179e made it no longer used.

Change-Id: Ib96ae303201e35e23b122cbca634c00084ec3a59
Reviewed-on: https://pdfium-review.googlesource.com/c/51270
Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/fpdfsdk/cpdfsdk_helpers.cpp b/fpdfsdk/cpdfsdk_helpers.cpp
index 18a2c3a..f61f498 100644
--- a/fpdfsdk/cpdfsdk_helpers.cpp
+++ b/fpdfsdk/cpdfsdk_helpers.cpp
@@ -239,27 +239,6 @@
   return true;
 }
 
-bool GetQuadPointsFromDictionary(CPDF_Dictionary* dict,
-                                 size_t quad_index,
-                                 FS_QUADPOINTSF* quad_points) {
-  ASSERT(quad_points);
-
-  const CPDF_Array* pArray = GetQuadPointsArrayFromDictionary(dict);
-  if (!pArray || quad_index >= pArray->size() / 8)
-    return false;
-
-  quad_index *= 8;
-  quad_points->x1 = pArray->GetNumberAt(quad_index);
-  quad_points->y1 = pArray->GetNumberAt(quad_index + 1);
-  quad_points->x2 = pArray->GetNumberAt(quad_index + 2);
-  quad_points->y2 = pArray->GetNumberAt(quad_index + 3);
-  quad_points->x3 = pArray->GetNumberAt(quad_index + 4);
-  quad_points->y3 = pArray->GetNumberAt(quad_index + 5);
-  quad_points->x4 = pArray->GetNumberAt(quad_index + 6);
-  quad_points->y4 = pArray->GetNumberAt(quad_index + 7);
-  return true;
-}
-
 CFX_FloatRect CFXFloatRectFromFSRECTF(const FS_RECTF& rect) {
   return CFX_FloatRect(rect.left, rect.bottom, rect.right, rect.top);
 }