[media] DocBook/media-ioc-setup-link.xml: Remove EBUSY

The EBUSY is already described as a generic error condition, with a
similar text.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Documentation/DocBook/media/v4l/media-ioc-setup-link.xml

@@ -71,15 +71,6 @@
     &return-value;
 
     <variablelist>
-      <varlistentry>
-	<term><errorcode>EBUSY</errorcode></term>
-	<listitem>
-	  <para>The link properties can't be changed because the link is
-	  currently busy. This can be caused, for instance, by an active media
-	  stream (audio or video) on the link. The ioctl shouldn't be retried if
-	  no other action is performed before to fix the problem.</para>
-	</listitem>
-      </varlistentry>
       <varlistentry>
 	<term><errorcode>EINVAL</errorcode></term>
 	<listitem>