docs: filesystems: sysfs: remove top level sysfs net directory

The net/ directory is not present as a top level sysfs directory
in standard Linux systems. Network interfaces can be accessible
via /sys/class/net instead.

Signed-off-by: Alex Tran <alex.t.tran@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20250902023039.1351270-3-alex.t.tran@gmail.com>

Author: alectric-tr

Documentation/filesystems/sysfs.rst

@@ -299,7 +299,6 @@ The top level sysfs directory looks like::
     hypervisor/
     kernel/
     module/
-    net/
     power/
 
 devices/ contains a filesystem representation of the device tree. It maps