[turbofan] Drop obsolete unused JSStrictNotEqual operator.

src/builtins/builtins.h

 // Copyright 2011 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_BUILTINS_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/globals.h"
 
@@ skipping 586 matching lines @@
   TFS(ShiftLeft, BUILTIN, kNoExtraICState, BinaryOp, 1)                        \
   TFS(ShiftRight, BUILTIN, kNoExtraICState, BinaryOp, 1)                       \
   TFS(ShiftRightLogical, BUILTIN, kNoExtraICState, BinaryOp, 1)                \
   TFS(LessThan, BUILTIN, kNoExtraICState, Compare, 1)                          \
   TFS(LessThanOrEqual, BUILTIN, kNoExtraICState, Compare, 1)                   \
   TFS(GreaterThan, BUILTIN, kNoExtraICState, Compare, 1)                       \
   TFS(GreaterThanOrEqual, BUILTIN, kNoExtraICState, Compare, 1)                \
   TFS(Equal, BUILTIN, kNoExtraICState, Compare, 1)                             \
   TFS(NotEqual, BUILTIN, kNoExtraICState, Compare, 1)                          \
   TFS(StrictEqual, BUILTIN, kNoExtraICState, Compare, 1)                       \
-  TFS(StrictNotEqual, BUILTIN, kNoExtraICState, Compare, 1)                    \
                                                                                \
   /* Object */                                                                 \
   CPP(ObjectAssign)                                                            \
   TFJ(ObjectCreate, 2)                                                         \
   CPP(ObjectDefineGetter)                                                      \
   CPP(ObjectDefineProperties)                                                  \
   CPP(ObjectDefineProperty)                                                    \
   CPP(ObjectDefineSetter)                                                      \
   CPP(ObjectEntries)                                                           \
   CPP(ObjectFreeze)                                                            \
@@ skipping 377 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_