media: ca.h: get rid of CA_SET_PID

This ioctl seems to be some attempt to support a feature
at the bt8xx dst_ca driver. Yet, as said there, it
"needs more work". Right now, the code there is just
a boilerplate.

At the end of the day, no driver uses this ioctl, nor it is
documented anywhere (except for "needs more work").

So, get rid of it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/dvb/ca-set-pid.rst

@@ -1,60 +0,0 @@
-.. -*- coding: utf-8; mode: rst -*-
-
-.. _CA_SET_PID:
-
-==========
-CA_SET_PID
-==========
-
-Name
-----
-
-CA_SET_PID
-
-
-Synopsis
---------
-
-.. c:function:: int ioctl(fd, CA_SET_PID, struct ca_pid *pid)
-    :name: CA_SET_PID
-
-
-Arguments
----------
-
-``fd``
-  File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`.
-
-``pid``
-  Pointer to struct :c:type:`ca_pid`.
-
-.. c:type:: ca_pid
-
-.. flat-table:: struct ca_pid
-    :header-rows:  1
-    :stub-columns: 0
-
-    -
-       - unsigned int
-       - pid
-       - Program ID
-
-    -
-       - int
-       - index
-       - PID index. Use -1 to disable.
-
-
-
-Description
------------
-
-.. note:: This ioctl is undocumented. Documentation is welcome.
-
-
-Return Value
-------------
-
-On success 0 is returned, on error -1 and the ``errno`` variable is set
-appropriately. The generic error codes are described at the
-:ref:`Generic Error Codes <gen-errors>` chapter.

Documentation/media/uapi/dvb/ca_data_types.rst

@@ -94,17 +94,3 @@ ca_descr_t
 	unsigned int parity;
 	unsigned char cw[8];
     } ca_descr_t;
-
-
-.. c:type:: ca_pid
-
-ca-pid
-======
-
-
-.. code-block:: c
-
-    typedef struct ca_pid {
-	unsigned int pid;
-	int index;      /* -1 == disable*/
-    } ca_pid_t;

Documentation/media/uapi/dvb/ca_function_calls.rst

@@ -18,4 +18,3 @@ CA Function Calls
     ca-get-msg
     ca-send-msg
     ca-set-descr
-    ca-set-pid