[fullcodegen] Remove dead hole check logic

src/full-codegen/full-codegen.h

 // Copyright 2012 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.
 
 #ifndef V8_FULL_CODEGEN_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_FULL_CODEGEN_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/ast/ast.h"
@@ skipping 460 matching lines @@
                              Expression* right);
 
   // Assign to the given expression as if via '='. The right-hand-side value
   // is expected in the accumulator. slot is only used if FLAG_vector_stores
   // is true.
   void EmitAssignment(Expression* expr, FeedbackVectorSlot slot);
 
   // Complete a variable assignment.  The right-hand-side value is expected
   // in the accumulator.
   void EmitVariableAssignment(Variable* var, Token::Value op,
-                              FeedbackVectorSlot slot,
-                              HoleCheckMode hole_check_mode);
+                              FeedbackVectorSlot slot);
 
   // Helper functions to EmitVariableAssignment
   void EmitStoreToStackLocalOrContextSlot(Variable* var,
                                           MemOperand location);
 
   // Complete a named property assignment.  The receiver is expected on top
   // of the stack and the right-hand-side value in the accumulator.
   void EmitNamedPropertyAssignment(Assignment* expr);
 
   // Complete a keyed property assignment.  The receiver and key are
@@ skipping 404 matching lines @@
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FULL_CODEGEN_FULL_CODEGEN_H_