dt-bindings: iio: adc: Migrate MCP3911 documentation to yaml

deleted file mode 100644
index 3071f48fb30b..000000000000
@@ -1,30 +0,0 @@
-* Microchip MCP3911 Dual channel analog front end (ADC)
-
-Required properties:
- - compatible: Should be "microchip,mcp3911"
- - reg: SPI chip select number for the device
-
-Recommended properties:
- - spi-max-frequency: Definition as per
-	 Documentation/devicetree/bindings/spi/spi-bus.txt.
-	 Max frequency for this chip is 20MHz.
-
-Optional properties:
- - clocks: Phandle and clock identifier for sampling clock
- - interrupt-parent: Phandle to the parent interrupt controller
- - interrupts: IRQ line for the ADC
- - microchip,device-addr: Device address when multiple MCP3911 chips are present on the
-	same SPI bus. Valid values are 0-3. Defaults to 0.
- - vref-supply: Phandle to the external reference voltage supply.
-
-Example:
-adc@0 {
-	compatible = "microchip,mcp3911";
-	reg = <0>;
-	interrupt-parent = <&gpio5>;
-	interrupts = <15 IRQ_TYPE_EDGE_RISING>;
-	spi-max-frequency = <20000000>;
-	microchip,device-addr = <0>;
-	vref-supply = <&vref_reg>;
-	clocks = <&xtal>;
-};

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index e51a68bf8ca8..fbccc9d450ff 100644
@@ -10723,7 +10723,7 @@ M:	Kent Gustavsson <[email protected]>
 L:	[email protected]
 S:	Supported
 F:	drivers/iio/adc/mcp3911.c
-F:	Documentation/devicetree/bindings/iio/adc/mcp3911.txt
+F:	Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
 
 MICROCHIP NAND DRIVER
 M:	Tudor Ambarus <[email protected]>