[media] dev-capture.rst/dev-output.rst: video standards ioctls are optional

The documentation for video capture and output devices claims that the video standard
ioctls are required. This is not the case, they are only required for PAL/NTSC/SECAM
type inputs and outputs. Sensors do not implement this at all and e.g. HDMI inputs
implement the DV Timings ioctls.

Just drop the mention of 'video standard' ioctls.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/v4l/dev-capture.rst

@@ -42,8 +42,8 @@ Video capture devices shall support :ref:`audio input <audio>`,
 :ref:`tuner`, :ref:`controls <control>`,
 :ref:`cropping and scaling <crop>` and
 :ref:`streaming parameter <streaming-par>` ioctls as needed. The
-:ref:`video input <video>` and :ref:`video standard <standard>`
-ioctls must be supported by all video capture devices.
+:ref:`video input <video>` ioctls must be supported by all video
+capture devices.
 
 
 Image Format Negotiation

Documentation/media/uapi/v4l/dev-output.rst

@@ -40,8 +40,8 @@ Video output devices shall support :ref:`audio output <audio>`,
 :ref:`modulator <tuner>`, :ref:`controls <control>`,
 :ref:`cropping and scaling <crop>` and
 :ref:`streaming parameter <streaming-par>` ioctls as needed. The
-:ref:`video output <video>` and :ref:`video standard <standard>`
-ioctls must be supported by all video output devices.
+:ref:`video output <video>` ioctls must be supported by all video
+output devices.
 
 
 Image Format Negotiation