ident: Remove the unused function id_mangle().

include/libfirm/ident.h

@@ -64,9 +64,6 @@ FIRM_API ident *id_unique(const char *tag);
 /** mangle underscore: Returns a new ident that represents first_scnd. */
 FIRM_API ident *id_mangle_u(ident *first, ident* scnd);
 
-/** mangle: Returns a new ident that represents firstscnd. */
-FIRM_API ident *id_mangle(ident *first, ident* scnd);
-
 /** Returns a new ident that represents 'prefixscndsuffix'. */
 FIRM_API ident *id_mangle3(const char *prefix, ident *middle,
                            const char *suffix);

ir/ident/mangle.c

@@ -38,14 +38,6 @@ static ident *new_ident_from_obst(struct obstack *obst)
 	return res;
 }
 
-/* Returns a new ident that represents 'firstscnd'. */
-ident *id_mangle(ident *first, ident *scnd)
-{
-	obstack_grow_ident(&mangle_obst, first);
-	obstack_grow_ident(&mangle_obst, scnd);
-	return new_ident_from_obst(&mangle_obst);
-}
-
 /** Returns a new ident that represents 'prefixscndsuffix'. */
 ident *id_mangle3(const char *prefix, ident *scnd, const char *suffix)
 {