console: Drop unused prototypes

Commit e235cec3 converted the query-mice
command to the QAPI but forgot to remove two prototypes used by the old
QAPI. Drop them.
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>

console.h

@@ -74,8 +74,6 @@ struct MouseTransformInfo {
     int a[7];
 };
 
-void do_info_mice_print(Monitor *mon, const QObject *data);
-void do_info_mice(Monitor *mon, QObject **ret_data);
 void do_mouse_set(Monitor *mon, const QDict *qdict);
 
 /* keysym is a unicode code except for special keys (see QEMU_KEY_xxx