Version 5.5.289.1 (cherry-pick)

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 5ed03f8101418ad3333be162018369ab3fd888eb..aad5a77fd232b47227c9d754b69ed36d612afdfe 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -2688,15 +2688,6 @@ compiler::Node* DecStub::Generate(CodeStubAssembler* assembler,
   return result_var.value();
 }
 
-// ES6 section 21.1.3.19 String.prototype.substring ( start, end )
-compiler::Node* SubStringStub::Generate(CodeStubAssembler* assembler,
-                                        compiler::Node* string,
-                                        compiler::Node* from,
-                                        compiler::Node* to,
-                                        compiler::Node* context) {
-  return assembler->SubString(context, string, from, to);
-}
-
 // ES6 section 7.1.13 ToObject (argument)
 void ToObjectStub::GenerateAssembly(CodeStubAssembler* assembler) const {
   typedef compiler::Node Node;