dt-bindings: trivial-devices: Remove national,lm75

Starting with commit 3e37c9d4 ("dt-bindings: hwmon: Convert lm75
bindings to yaml") 'national,lm75' has it's own dedicated (YAML) binding.
If kept in this file device specific properties as 'vs-supply' are
considered excessive. Remove compatible here so it can be checked with
more specific binding.
arch/arm/boot/dts/nxp/imx/imx6q-mba6a.dtb: sensor@48: 'vs-supply' does not
match any of the regexes: 'pinctrl-[0-9]+'
  From schema: Documentation/devicetree/bindings/trivial-devices.yaml

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230810144451.1459985-2-alexander.stein@ew.tq-group.com


Signed-off-by: Rob Herring <robh@kernel.org>