Remove Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml from
STAGING - SEPS525 LCD CONTROLLER DRIVERS. This was likley a copy/paste
mistake. There is no bindings file for SEPS525 since it is only in
staging.
The removed file matches Documentation/devicetree/bindings/iio/*/adi,*
under ANALOG DEVICES INC IIO DRIVERS already so wasn't just misplaced.