ASoC: dt-bindings: tas2780: remove tas2780 and will merge it to tas27xx

Remove tas2780 binding documentation, the binding will be documented in
the tax27xx binding.
Signed-off-by: Raphael-Xu <13691752556@139.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220722105345.175-1-13691752556@139.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/tas2780.yaml

-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-# Copyright (C) 2020-2022 Texas Instruments Incorporated
-%YAML 1.2
----
-$id: "http://devicetree.org/schemas/sound/tas2780.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
-
-title: Texas Instruments TAS2780 Smart PA
-
-maintainers:
-  - Raphael Xu <raphael-xu@ti.com>
-
-description: |
-  The TAS2780 is a mono, digital input Class-D audio amplifier optimized for
-  efficiently driving high peak power into small loudspeakers.
-  Integrated speaker voltage and current sense provides for
-  real time monitoring of loudspeaker behavior.
-
-properties:
-  compatible:
-    enum:
-      - ti,tas2780
-
-  reg:
-    maxItems: 1
-    description: |
-       I2C address of the device can be between 0x38 to 0x45.
-
-  reset-gpios:
-    maxItems: 1
-    description: GPIO used to reset the device.
-
-  interrupts:
-    maxItems: 1
-
-  ti,imon-slot-no:
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description: TDM TX current sense time slot.
-
-  ti,vmon-slot-no:
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description: TDM TX voltage sense time slot.
-
-  '#sound-dai-cells':
-    const: 1
-
-required:
-  - compatible
-  - reg
-
-additionalProperties: false
-
-examples:
-  - |
-   #include <dt-bindings/gpio/gpio.h>
-   i2c0 {
-     #address-cells = <1>;
-     #size-cells = <0>;
-     codec: codec@38 {
-       compatible = "ti,tas2780";
-       reg = <0x38>;
-       #sound-dai-cells = <1>;
-       interrupt-parent = <&gpio1>;
-       interrupts = <14>;
-       reset-gpios = <&gpio1 15 0>;
-       shutdown-gpios = <&gpio1 15 0>;
-       ti,imon-slot-no = <0>;
-       ti,vmon-slot-no = <2>;
-     };
-   };
-
-...