docs: admin: devices: remove /dev/cdwriter

docs: admin: devices: remove /dev/cdwriter

Remove /dev/cdwriter from the local symlinks table and from the related
note.

Creation of the symlink was removed from udev in commit [1] that
became a part of release 115 in 2007 [2].

The altered text was added in 1995 [3].

[1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=b1a2b83f2d
    2007-08-11 14:06:03 +0200 Kay Sievers.
    rules: update Fedora rules

[2] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?h=7e599863919
    2007-08-24 01:29:54 +0200 Kay Sievers.
    release 115

[3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.5.45&id=6e995ea941a
    1995-11-21 Linus Torvalds.
    Import 1.3.43

Signed-off-by: Max Nikulin <manikulin@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f5c3f6e9-cd92-47e3-89c3-06dbcfc98c17@gmail.com>