[libsoup/wip/remove-deprecations: 39/49] Make soup_message_io_cleanup() private

[Patrick Griffis <pgriffis src gnome org>]

commit debe679a4fd3effdf9e11ea7da72921eeafb8456
Author: Patrick Griffis <pgriffis igalia com>
Date:   Sun Mar 15 23:52:20 2020 -0700

    Make soup_message_io_cleanup() private

 libsoup/soup-message-private.h | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/libsoup/soup-message-private.h b/libsoup/soup-message-private.h
index a7a83917..b8955e52 100644
--- a/libsoup/soup-message-private.h
+++ b/libsoup/soup-message-private.h
@@ -103,10 +103,6 @@ SoupAuth      *soup_message_get_proxy_auth (SoupMessage *msg);
 /* I/O */
 void       soup_message_io_stop        (SoupMessage *msg);
 void       soup_message_io_finished    (SoupMessage *msg);
-/* This is supposed to be private, but there are programs that rely on it
- * being exported. See bug #687758, #687468.
- */
-SOUP_AVAILABLE_IN_2_4
 void       soup_message_io_cleanup     (SoupMessage *msg);
 void       soup_message_io_pause       (SoupMessage *msg);
 void       soup_message_io_unpause     (SoupMessage *msg);