Remove last recipe file.

src/backend/commands/_deadcode/recipe.h

-/*-------------------------------------------------------------------------
- *
- * recipe.h
- *	  recipe handling routines
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * $Id: recipe.h,v 1.7 2002/06/20 20:29:27 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#ifndef RECIPE_H
-#define RECIPE_H
-
-#include "nodes/parsenodes.h"
-
-extern void beginRecipe(RecipeStmt *stmt);
-
-#endif   /* RECIPE_H */