dt-bindings: rtc: Remove the PCF8563 from the trivial RTCs

The PCF8563 has a binding of its own, with some, clocks related, additional
properties.

Remove it from the trivial RTC bindings.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://lore.kernel.org/r/20190722140921.22681-1-maxime.ripard@bootlin.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Documentation/devicetree/bindings/rtc/trivial-rtc.yaml

@@ -52,8 +52,6 @@ properties:
       - nxp,pcf2127
       # Real-time clock
       - nxp,pcf2129
-      # Real-time clock/calendar
-      - nxp,pcf8563
       # Real-time Clock Module
       - pericom,pt7c4338
       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC