qapi: Dealloc visitor does not need a type_size()

The intent of having the visitor type_size() callback differ
from type_uint64() is to allow special handling for sizes; the
visitor core gracefully falls back to type_uint64() if there is
no need for the distinction.  Since the dealloc visitor does
nothing for any of the int visits, drop the pointless size
handler.
Signed-off-by: NEric Blake <eblake@redhat.com>
Message-Id: <1454075341-13658-5-git-send-email-eblake@redhat.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

qapi/qapi-dealloc-visitor.c

@@ -159,11 +159,6 @@ static void qapi_dealloc_type_anything(Visitor *v, QObject **obj,
     }
 }
 
-static void qapi_dealloc_type_size(Visitor *v, uint64_t *obj, const char *name,
-                                   Error **errp)
-{
-}
-
 static void qapi_dealloc_type_enum(Visitor *v, int *obj,
                                    const char * const strings[],
                                    const char *kind, const char *name,
@@ -225,7 +220,6 @@ QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
     v->visitor.type_str = qapi_dealloc_type_str;
     v->visitor.type_number = qapi_dealloc_type_number;
     v->visitor.type_any = qapi_dealloc_type_anything;
-    v->visitor.type_size = qapi_dealloc_type_size;
     v->visitor.start_union = qapi_dealloc_start_union;
 
     QTAILQ_INIT(&v->stack);