remove unused build_var_debug_value prototype

gcc/ChangeLog:

2017-07-28  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* tree.h (build_var_debug_value): Remove prototype.

From-SVN: r250704

gcc/ChangeLog

 2017-07-28  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* tree.h (build_var_debug_value): Remove prototype.
+
+2017-07-28  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* tree.c (tree_cons_stat): Remove _stat from name.
 	* tree.h (tree_cons): Remove macro.
 

gcc/tree.h

@@ -3989,10 +3989,6 @@ build5_loc (location_t loc, enum tree_code code, tree type, tree arg0,
   return t;
 }
 
-extern tree build_var_debug_value_stat (tree, tree MEM_STAT_DECL);
-#define build_var_debug_value(t1,t2) \
-  build_var_debug_value_stat (t1,t2 MEM_STAT_INFO)
-
 /* Constructs double_int from tree CST.  */
 
 extern tree double_int_to_tree (tree, double_int);