spice: remove spice-experimental.h include

Nothing seems to be using functions from spice-experimental.h (better
that way). Let's remove its inclusion.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

spice-qemu-char.c

@@ -3,7 +3,6 @@
 #include "ui/qemu-spice.h"
 #include "sysemu/char.h"
 #include <spice.h>
-#include <spice-experimental.h>
 #include <spice/protocol.h>
 
 #include "qemu/osdep.h"

ui/spice-core.c

@@ -16,7 +16,6 @@
  */
 
 #include <spice.h>
-#include <spice-experimental.h>
 
 #include <netdb.h>
 #include "sysemu/sysemu.h"