[CodeGen] Remove unused declaration EmitMoveFromReturnSlot

The corresponding function definition was removed by:

  commit 56e5a2e13e3048fc2ff39029cde406d9f4eb55f3
  Author: George Burgess IV <george.burgess.iv@gmail.com>
  Date:   Sat Mar 10 01:11:17 2018 +0000

diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 7a2d650..0b29190 100644 (file)
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -85,8 +85,6 @@ public:
   void EmitCopy(QualType type, const AggValueSlot &dest,
                 const AggValueSlot &src);
 
-  void EmitMoveFromReturnSlot(const Expr *E, RValue Src);
-
   void EmitArrayInit(Address DestPtr, llvm::ArrayType *AType, QualType ArrayQTy,
                      Expr *ExprToVisit, ArrayRef<Expr *> Args,
                      Expr *ArrayFiller);