media: dt-bindings: media: Remove qcom,camss documentation

This documentation has been incorporated in dtschema dt-bindings
for the devices supported by CAMSS and is no longer helpful.

Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>