Revert of [builtins] implement Array.prototype.includes in TurboFan

src/code-stub-assembler.h

 // Copyright 2016 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_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 106 matching lines @@
   void BranchIfFloat64IsNaN(compiler::Node* value, Label* if_true,
                             Label* if_false) {
     BranchIfFloat64Equal(value, value, if_false, if_true);
   }
 
   // Branches to {if_true} if ToBoolean applied to {value} yields true,
   // otherwise goes to {if_false}.
   void BranchIfToBooleanIsTrue(compiler::Node* value, Label* if_true,
                                Label* if_false);
 
-  void BranchIfSimd128Equal(compiler::Node* lhs, compiler::Node* lhs_map,
-                            compiler::Node* rhs, compiler::Node* rhs_map,
-                            Label* if_equal, Label* if_notequal);
-  void BranchIfSimd128Equal(compiler::Node* lhs, compiler::Node* rhs,
-                            Label* if_equal, Label* if_notequal) {
-    BranchIfSimd128Equal(lhs, LoadMap(lhs), rhs, LoadMap(rhs), if_equal,
-                         if_notequal);
-  }
-
-  void BranchIfSameValueZero(compiler::Node* a, compiler::Node* b,
-                             compiler::Node* context, Label* if_true,
-                             Label* if_false);
-
-  void BranchIfFastJSArray(compiler::Node* object, compiler::Node* context,
-                           Label* if_true, Label* if_false);
-
   // Load value from current frame by given offset in bytes.
   compiler::Node* LoadFromFrame(int offset,
                                 MachineType rep = MachineType::AnyTagged());
   // Load value from current parent frame by given offset in bytes.
   compiler::Node* LoadFromParentFrame(
       int offset, MachineType rep = MachineType::AnyTagged());
 
   // Load an object pointer from a buffer that isn't in the heap.
   compiler::Node* LoadBufferObject(compiler::Node* buffer, int offset,
                                    MachineType rep = MachineType::AnyTagged());
@@ skipping 369 matching lines @@
                                        AllocationFlags flags,
                                        compiler::Node* top_adddress,
                                        compiler::Node* limit_address);
 
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_