[WASM] Simplify SIMD shuffle opcodes.

src/compiler/opcodes.h

 // Copyright 2013 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_COMPILER_OPCODES_H_
 #define V8_COMPILER_OPCODES_H_
 
 #include <iosfwd>
 
 #include "src/globals.h"
@@ skipping 682 matching lines @@
   V(I8x16GtU)                   \
   V(I8x16GeU)                   \
   V(S128Load)                   \
   V(S128Store)                  \
   V(S128Zero)                   \
   V(S128Not)                    \
   V(S128And)                    \
   V(S128Or)                     \
   V(S128Xor)                    \
   V(S128Select)                 \
-  V(S32x4Shuffle)               \
-  V(S16x8Shuffle)               \
   V(S8x16Shuffle)               \
   V(S1x4AnyTrue)                \
   V(S1x4AllTrue)                \
   V(S1x8AnyTrue)                \
   V(S1x8AllTrue)                \
   V(S1x16AnyTrue)               \
   V(S1x16AllTrue)
 
 #define VALUE_OP_LIST(V)  \
   COMMON_OP_LIST(V)       \
@@ skipping 84 matching lines @@
   }
 };
 
 V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream&, IrOpcode::Value);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_