[turbofan] Remove dead JSTypedLowering::EmptyFrameState.

src/compiler/js-typed-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-factory.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/linkage.h"
@@ skipping 2107 matching lines @@
     case IrOpcode::kNumberTrunc:
       return ReduceNumberRoundop(node);
     case IrOpcode::kLoadField:
       return ReduceLoadField(node);
     default:
       break;
   }
   return NoChange();
 }
 
-Node* JSTypedLowering::EmptyFrameState() {
-  return graph()->NewNode(
-      common()->FrameState(BailoutId::None(), OutputFrameStateCombine::Ignore(),
-                           nullptr),
-      jsgraph()->EmptyStateValues(), jsgraph()->EmptyStateValues(),
-      jsgraph()->EmptyStateValues(), jsgraph()->NoContextConstant(),
-      jsgraph()->UndefinedConstant(), graph()->start());
-}
 
 Factory* JSTypedLowering::factory() const { return jsgraph()->factory(); }
 
 
 Graph* JSTypedLowering::graph() const { return jsgraph()->graph(); }
 
 
 Isolate* JSTypedLowering::isolate() const { return jsgraph()->isolate(); }
 
 
@@ skipping 15 matching lines @@
 }
 
 
 CompilationDependencies* JSTypedLowering::dependencies() const {
   return dependencies_;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8