[turbofan] Remove bogus constant materialization from frame.

src/compiler/code-generator.h

Index: src/compiler/code-generator.h
diff --git a/src/compiler/code-generator.h b/src/compiler/code-generator.h
index 22ba727983170eceb4583eb527b8f7b3b52ae374..781c49d882c885f7bda876a5fe82bd3bf9a89ac4 100644
--- a/src/compiler/code-generator.h
+++ b/src/compiler/code-generator.h
@@ -86,9 +86,6 @@ class CodeGenerator final : public GapResolver::Assembler {
   void RecordSafepoint(ReferenceMap* references, Safepoint::Kind kind,
                        int arguments, Safepoint::DeoptMode deopt_mode);
 
-  // Check if a heap object can be materialized by loading from the frame, which
-  // is usually way cheaper than materializing the actual heap object constant.
-  bool IsMaterializableFromFrame(Handle<HeapObject> object, int* slot_return);
   // Check if a heap object can be materialized by loading from a heap root,
   // which is cheaper on some platforms than materializing the actual heap
   // object constant.