dt-bindings:iio:temperature:meas,tsys01 move to trivial-devices.yaml

The existing binding description brings little value and the similar
meas,* parts are in trivial-devices.yaml so move this one there
to join them.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201031134110.724233-27-jic23@kernel.org