examples: In create_disk example, don't call set_autosync.

This is now set by default in all supported versions of libguestfs.
It's just confusing if the examples refer to it.

python/examples/create_disk.py

@@ -15,10 +15,6 @@ f.close ()
 # Set the trace flag so that we can see each libguestfs call.
 g.set_trace (1)
 
-# Set the autosync flag so that the disk will be synchronized
-# automatically when the libguestfs handle is closed.
-g.set_autosync (1)
-
 # Attach the disk image to libguestfs.
 g.add_drive_opts (output, format = "raw", readonly = 0)
 
@@ -55,7 +51,4 @@ g.mkdir ("/foo")
 # the disk image.
 g.upload ("/etc/resolv.conf", "/foo/resolv.conf")
 
-# Because 'autosync' was set (above) we can just close the handle
-# and the disk contents will be synchronized.  You can also do
-# this manually by calling g.umount_all and g.sync.
 g.close ()