dt-bindings: arm,cci-400: Drop the PL330 from example

The PL330 was commented out because its binding wasn't converted to a
schema. With the binding converted, the example now needs several updates.
However, while it's possible that the PL330 has a 'cci-control-port', there
aren't any platforms upstream which do. So rather than allowing
'cci-control-port' in the PL330 binding, let's just drop the example.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/arm/arm,cci-400.yaml

@@ -166,16 +166,6 @@ examples:
               };
           };
 
-          dma0: dma@3000000 {
-              /* compatible = "arm,pl330", "arm,primecell"; */
-              cci-control-port = <&cci_control0>;
-              reg = <0x0 0x3000000 0x0 0x1000>;
-              interrupts = <10>;
-              #dma-cells = <1>;
-              #dma-channels = <8>;
-              #dma-requests = <32>;
-          };
-
           cci@2c090000 {
               compatible = "arm,cci-400";
               #address-cells = <1>;