doc-rst: linux_tv: remove controls

This auto-generated file is bogus: it just adds a toc for two
other files. Instead, just move the controls and extended-controls
directly to the common file.

this avoids a blank page, and better organize the document.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/linux_tv/media/v4l/common.rst

@@ -37,7 +37,8 @@ applicable to all devices.
     tuner
     standard
     dv-timings
-    controls
+    control
+    extended-controls
     format
     planar-apis
     crop

Documentation/linux_tv/media/v4l/controls.rst

-.. -*- coding: utf-8; mode: rst -*-
-
-.. toctree::
-    :maxdepth: 1
-
-    control
-    extended-controls
-
-
-
-
-.. ------------------------------------------------------------------------------
-.. This file was automatically converted from DocBook-XML with the dbxml
-.. library (https://github.com/return42/sphkerneldoc). The origin XML comes
-.. from the linux kernel, refer to:
-..
-.. * https://github.com/torvalds/linux/tree/master/Documentation/DocBook
-.. ------------------------------------------------------------------------------