regulator: max77826: Remove erroneous additionalProperties

In this particular location additionalProperties actually declares a property
named `additionalProperties` instead of specifying there should be no other
properties.
Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Link: https://lore.kernel.org/r/20200425125335.2674534-1-iskren.chernev@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/regulator/maxim,max77826.yaml

@@ -38,7 +38,6 @@ properties:
         allOf:
           - $ref: regulator.yaml#
 
-      additionalProperties: false
     additionalProperties: false
 
 required: