Revert of Implement WASM big-endian support

src/utils.h

Index: src/utils.h
diff --git a/src/utils.h b/src/utils.h
index 2acc95ef3c07f9a5a565c9fffae1c59db289a14c..9b94a2feb1de6a7e9fcc8910ec3008e93f4a3bca 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1552,33 +1552,6 @@
   WriteUnalignedValue(p, value);
 }
 
-template <typename V>
-static inline V ReadLittleEndianValue(const void* p) {
-#if defined(V8_TARGET_LITTLE_ENDIAN)
-  return ReadUnalignedValue<V>(p);
-#elif defined(V8_TARGET_BIG_ENDIAN)
-  V ret = 0;
-  const byte* src = reinterpret_cast<const byte*>(p);
-  byte* dst = reinterpret_cast<byte*>(&ret);
-  for (size_t i = 0; i < sizeof(V); i++) {
-    dst[i] = src[sizeof(V) - i - 1];
-  }
-  return ret;
-#endif  // V8_TARGET_LITTLE_ENDIAN
-}
-
-template <typename V>
-static inline void WriteLittleEndianValue(void* p, V value) {
-#if defined(V8_TARGET_LITTLE_ENDIAN)
-  WriteUnalignedValue<V>(p, value);
-#elif defined(V8_TARGET_BIG_ENDIAN)
-  byte* src = reinterpret_cast<byte*>(&value);
-  byte* dst = reinterpret_cast<byte*>(p);
-  for (size_t i = 0; i < sizeof(V); i++) {
-    dst[i] = src[sizeof(V) - i - 1];
-  }
-#endif  // V8_TARGET_LITTLE_ENDIAN
-}
 }  // namespace internal
 }  // namespace v8