isdn: mISDN: remove a bogus reference to a non-existing doc

The mISDN driver was added on those commits:

	960366cf8dbb ("Add mISDN DSP")
	1b2b03f8e514 ("Add mISDN core files")
	04578dd330f1 ("Define AF_ISDN and PF_ISDN")
	e4ac9bc1f668 ("Add mISDN driver")

None of them added a Documentation/isdn/mISDN.cert file.
Also, whatever were supposed to be written there on that time,
probably doesn't make any sense nowadays, as I doubt isdn would
have any massive changes.

So, let's just get rid of the broken reference, in order to
shut up a warning produced by ./scripts/documentation-file-ref-check.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c
index cd036e87335a..038e72a84b33 100644
--- a/drivers/isdn/mISDN/dsp_core.c
+++ b/drivers/isdn/mISDN/dsp_core.c
@@ -4,8 +4,6 @@
  *              Karsten Keil (keil@isdn4linux.de)
  *
  *              This file is (c) under GNU PUBLIC LICENSE
- *              For changes and modifications please read
- *              ../../../Documentation/isdn/mISDN.cert
  *
  * Thanks to    Karsten Keil (great drivers)
  *              Cologne Chip (great chips)