media: docs: get rid of Documentation/media/

Now that everything got moved, we can get rid of the
old media directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/driver-api/index.rst

@@ -63,6 +63,7 @@ available subsections can be seen below.
    pinctl
    gpio/index
    md/index
+   media/index
    misc_devices
    nfc/index
    dmaengine/index

Documentation/index.rst

@@ -109,7 +109,6 @@ needed).
    isdn/index
    infiniband/index
    leds/index
-   media/index
    netlabel/index
    networking/index
    pcmcia/index

Documentation/media/.gitignore

-# SPDX-License-Identifier: GPL-2.0
-
-*.pdf
-# Files generated from *.dot
-uapi/v4l/pipeline.svg

Documentation/media/index.rst

-.. SPDX-License-Identifier: GPL-2.0
-
-Linux Media Subsystem Documentation
-===================================
-
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
-.. toctree::
-   :maxdepth: 2
-
-   ../userspace-api/media/index
-   ../driver-api/media/index
-
-.. only:: html and subproject
-
-   Indices
-   =======
-
-   * :ref:`genindex`

Documentation/userspace-api/index.rst

@@ -22,6 +22,7 @@ place where this information is gathered.
    spec_ctrl
    accelerators/ocxl
    ioctl/index
+   media/index
 
 .. only::  subproject and html