Revert "Add support to load/store byte fields." and "MIPS: Add support to load/store byte fields.".

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 3d5a4560bb0227789e7092031bb0a35e12588b7e..0a12df83d2a6c039da6f9e5802e498477fd8efdc 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -781,10 +781,6 @@ class MacroAssembler: public Assembler {
   // ---------------------------------------------------------------------------
   // Macro instructions.
 
-  // Load/store with specific representation.
-  void Load(Register dst, const Operand& src, Representation r);
-  void Store(const Operand& dst, Register src, Representation r);
-
   // Load a register with a long value as efficiently as possible.
   void Set(Register dst, int64_t x);
   void Set(const Operand& dst, int64_t x);