Remove the attribute 'visibility' from 'ir_type'.

It is unused.

include/libfirm/typerep.h

@@ -1662,11 +1662,6 @@ typedef void entity_walk_func(ir_entity *ent, void *env);
 FIRM_API void walk_types_entities(ir_type *tp, entity_walk_func *doit,
                                   void *env);
 
-/** @deprecated */
-FIRM_API ir_visibility get_type_visibility(const ir_type *tp);
-/** @deprecated */
-FIRM_API void set_type_visibility(ir_type *tp, ir_visibility v);
-
 /** @} */
 
 /** @} */

ir/tr/type.c

@@ -127,16 +127,15 @@ static ir_type *new_type(tp_opcode const opcode, size_t attr_size,
 	ir_type *const res       = (ir_type*)xmalloc(node_size);
 	memset(res, 0, node_size);
 
-	res->kind       = k_type;
-	res->opcode     = opcode;
-	res->mode       = mode;
-	res->visibility = ir_visibility_external;
-	res->flags      = tf_none;
-	res->size       = 0;
-	res->align      = 0;
-	res->visit      = 0;
-	res->link       = NULL;
-	res->nr         = get_irp_new_node_nr();
+	res->kind   = k_type;
+	res->opcode = opcode;
+	res->mode   = mode;
+	res->flags  = tf_none;
+	res->size   = 0;
+	res->align  = 0;
+	res->visit  = 0;
+	res->link   = NULL;
+	res->nr     = get_irp_new_node_nr();
 
 	add_irp_type(res);   /* Remember the new type global. */
 
@@ -224,18 +223,6 @@ unsigned (get_type_size)(const ir_type *tp)
 	return get_type_size_(tp);
 }
 
-ir_visibility get_type_visibility(const ir_type *tp)
-{
-	assert(is_type(tp));
-	return tp->visibility;
-}
-
-void set_type_visibility(ir_type *tp, ir_visibility v)
-{
-	assert(is_type(tp));
-	tp->visibility = v;
-}
-
 void set_type_size(ir_type *tp, unsigned size)
 {
 	tp->size = size;

ir/tr/type_t.h

@@ -117,7 +117,6 @@ struct ir_type {
 	firm_kind kind;          /**< the firm kind, must be k_type */
 	tp_opcode opcode;
 	ident *name;             /**< The name of the type */
-	ir_visibility visibility;/**< Visibility of entities of this type. */
 	unsigned flags;          /**< Type flags, a bitmask of enum type_flags. */
 	unsigned size;           /**< Size of an ir_entity of this type. This is
 	                              determined when fixing the layout of this