dt-bindings: iio: st-sensors: Fix repeated text

The description oddly contains a copy of the initial paragraph.
Let's not repeat ourselves.
Suggested-by: Diederik de Haas <didi.debian@cknow.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230329074614.1037625-1-linus.walleij@linaro.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/st,st-sensors.yaml

@@ -11,9 +11,6 @@ description: The STMicroelectronics sensor devices are pretty straight-forward
   what type of sensor it is.
   Note that whilst this covers many STMicro MEMs sensors, some more complex
   IMUs need their own bindings.
-  The STMicroelectronics sensor devices are pretty straight-forward I2C or
-  SPI devices, all sharing the same device tree descriptions no matter what
-  type of sensor it is.
 
 maintainers:
   - Denis Ciocca <denis.ciocca@st.com>