Kill dead IFWL_*::Initialize() variants dead.

xfa/src/fwl/src/core/fwl_gridimp.cpp

Index: xfa/src/fwl/src/core/fwl_gridimp.cpp
diff --git a/xfa/src/fwl/src/core/fwl_gridimp.cpp b/xfa/src/fwl/src/core/fwl_gridimp.cpp
index 433deabbb1a4bbf525c80d23f058b30ce3fc0acb..492828854243fe2c02e837624f3e71892407d79e 100644
--- a/xfa/src/fwl/src/core/fwl_gridimp.cpp
+++ b/xfa/src/fwl/src/core/fwl_gridimp.cpp
@@ -14,12 +14,6 @@
 IFWL_Grid* IFWL_Grid::Create() {
   return new IFWL_Grid;
 }
-FWL_ERR IFWL_Grid::Initialize() {
-  CFWL_GridImp* pGridImpl = new CFWL_GridImp;
-  SetImpl(pGridImpl);
-  pGridImpl->SetInterface(this);
-  return pGridImpl->Initialize();
-}
 FWL_ERR IFWL_Grid::Initialize(CFWL_WidgetImpProperties& properties) {
   CFWL_GridImp* pGridImpl = new CFWL_GridImp(properties);
   SetImpl(pGridImpl);