[gssdp] Remove unused include

[Jens Georg <jensgeorg src gnome org>]

commit 6a69d9bb73aaf54437a627107dc4f35b944e6736
Author: Aurélien Chabot <aurelien chabot parrot com>
Date:   Thu Apr 28 10:27:18 2016 +0200

    Remove unused include
    
    Those include were introduce by the patch :
        3030bf4cb97db33fcdfe7e69706fdb0f19b0f446
        Port to glib multicast socket functions
    
    It seem there were needed in the first revision of the patch
    but not anymore after reviews.
    
    Moreover this will fix the build with bionic as ifaddrs.h is
    not available on this toolchain.
    
    Signed-off-by: Aurélien Chabot <aurelien chabot parrot com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765709

 libgssdp/gssdp-socket-source.c |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)
---
diff --git a/libgssdp/gssdp-socket-source.c b/libgssdp/gssdp-socket-source.c
index b72dc68..79e3d83 100644
--- a/libgssdp/gssdp-socket-source.c
+++ b/libgssdp/gssdp-socket-source.c
@@ -27,20 +27,11 @@
 #include <config.h>
 #include <glib.h>
 
-#ifndef G_OS_WIN32
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <net/if.h>
-#include <ifaddrs.h>
-#endif
 #include "gssdp-socket-functions.h"
 #include "gssdp-socket-source.h"
 #include "gssdp-protocol.h"
 #include "gssdp-error.h"
 
-#include <string.h>
-#include <stdio.h>
-
 static void
 gssdp_socket_source_initable_init (gpointer g_iface,
                                    gpointer iface_data);