[ms] [llvm-ml] Remove unused function

Summary: Remove unused function

Reviewed By: lbenes

Differential Revision: https://reviews.llvm.org/D83898

Author: ericastor

llvm/lib/MC/MCParser/MasmParser.cpp

@@ -810,9 +810,6 @@ class MasmParser : public MCAsmParser {
                              const StructInitializer &Initializer);
 
   // User-defined types (structs, unions):
-  bool emitStructValue(const StructInfo &Structure,
-                       const StructInitializer &Initializer,
-                       size_t InitialOffset = 0, size_t InitialField = 0);
   bool emitStructValues(const StructInfo &Structure);
   bool addStructField(StringRef Name, const StructInfo &Structure);
   bool parseDirectiveStructValue(const StructInfo &Structure,