Remove CPDF_Object::Release() in favor of direct delete

core/fpdfapi/fpdf_parser/cpdf_object.cpp

Index: core/fpdfapi/fpdf_parser/cpdf_object.cpp
diff --git a/core/fpdfapi/fpdf_parser/cpdf_object.cpp b/core/fpdfapi/fpdf_parser/cpdf_object.cpp
index d74003112fe3fb94ec650ae589e085769bd58b5e..ea2e43a7b650e74d076d09edf752d26cfd35ce00 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_object.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_object.cpp
@@ -37,11 +37,6 @@ CPDF_Object* CPDF_Object::CloneNonCyclic(
   return Clone();
 }
 
-void CPDF_Object::Release() {
-  CHECK(!m_ObjNum);
-  delete this;
-}
-
 CFX_ByteString CPDF_Object::GetString() const {
   return CFX_ByteString();
 }