doc/cdrom: Trvial documentation error, file not present

The sbpcd tester program is not included in the kernel source tree,
so remove the reference to it.
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Reported-by: NNick Warne <nick@ukfsn.org>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

Documentation/cdrom/ide-cd

@@ -145,8 +145,7 @@ useful for reading photocds.
 
 To play an audio CD, you should first unmount and remove any data
 CDROM.  Any of the CDROM player programs should then work (workman,
-workbone, cdplayer, etc.).  Lacking anything else, you could use the
-cdtester program in Documentation/cdrom/sbpcd.
+workbone, cdplayer, etc.).
 
 On a few drives, you can read digital audio directly using a program
 such as cdda2wav.  The only types of drive which I've heard support