[ms-inline-asm] Implement _emit directive (which is roughly equivalent to .byte).

<rdar://problem/12470345>.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166451 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCParser/MCAsmParser.h

@@ -97,9 +97,6 @@ public:
                                 const MCInstPrinter *IP,
                                 MCAsmParserSemaCallback &SI) = 0;
 
-  /// ParseStatement - Parse the next statement.
-  virtual bool ParseStatement() = 0;
-
   /// Warning - Emit a warning at the location \p L, with the message \p Msg.
   ///
   /// \return The return value is true, if warnings are fatal.