[media] doc-rst: remove an extra label on V4L2 and CEC parts

There's no need to say: Table of Contents there. Also, this
generates a duplicated caption xref. So, remove, to use the
same format on every part.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/media/uapi/cec/cec-api.rst b/Documentation/media/uapi/cec/cec-api.rst
index e7dc825..246fbae 100644
--- a/Documentation/media/uapi/cec/cec-api.rst
+++ b/Documentation/media/uapi/cec/cec-api.rst
@@ -15,7 +15,6 @@
 .. toctree::
     :maxdepth: 1
     :numbered:
-    :caption: Table of Contents
 
     cec-intro
     cec-funcs
diff --git a/Documentation/media/uapi/v4l/v4l2.rst b/Documentation/media/uapi/v4l/v4l2.rst
index 301f95b..c0859eb 100644
--- a/Documentation/media/uapi/v4l/v4l2.rst
+++ b/Documentation/media/uapi/v4l/v4l2.rst
@@ -14,7 +14,6 @@
 .. toctree::
     :numbered:
     :maxdepth: 1
-    :caption: Table of Contents
 
     common
     pixfmt