dt-bindings: Remove "status" from examples

Pretty much any node can have a status property, so it doesn't need to
be in examples.

Converted with the following command and removed examples with SoC and
board specific splits:

git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt

@@ -31,7 +31,6 @@ Example for full FPGA configuration:
 		cell-index = <1>;
 		interrupts = <92>;
 		clocks = <&coreclk 0>;
-		status = "okay";
 
 		fpga_mgr_spi: fpga-mgr@0 {
 			compatible = "xlnx,fpga-slave-serial";