dt-bindings: i2c: nomadik: Drop unused voltage supply from example

This drops the pointless v-i2c-supply from the Nomadik I2C
example. This is a leftover from before the use of power
domains when the power domain voltage was attached to a
regulator.

The unused property in the device trees will be removed
in a separate patch.
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml

@@ -89,7 +89,6 @@ examples:
 
       #address-cells = <1>;
       #size-cells = <0>;
-      v-i2c-supply = <&db8500_vape_reg>;
 
       clock-frequency = <400000>;
       clocks = <&prcc_kclk 3 3>, <&prcc_pclk 3 3>;