dt-bindings: timer: renesas,tpu: remove obsolete binding

Commit 1c4b5ecb7ea1 ("remove the h8300 architecture") removed Renesas
TPU timer driver. Let's remove its binding.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/877c3vnq0k.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml

@@ -9,15 +9,6 @@ title: Renesas R-Car Timer Pulse Unit PWM Controller
 maintainers:
   - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
 
-select:
-  properties:
-    compatible:
-      contains:
-        const: renesas,tpu
-  required:
-    - compatible
-    - '#pwm-cells'
-
 properties:
   compatible:
     items:

Documentation/devicetree/bindings/timer/renesas,tpu.yaml

@@ -1,56 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/timer/renesas,tpu.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Renesas H8/300 Timer Pulse Unit
-
-maintainers:
-  - Yoshinori Sato <ysato@users.sourceforge.jp>
-
-description:
-  The TPU is a 16bit timer/counter with configurable clock inputs and
-  programmable compare match.
-  This implementation supports only cascade mode.
-
-select:
-  properties:
-    compatible:
-      contains:
-        const: renesas,tpu
-    '#pwm-cells': false
-  required:
-    - compatible
-
-properties:
-  compatible:
-    const: renesas,tpu
-
-  reg:
-    items:
-      - description: First channel
-      - description: Second channel
-
-  clocks:
-    maxItems: 1
-
-  clock-names:
-    const: fck
-
-required:
-  - compatible
-  - reg
-  - clocks
-  - clock-names
-
-additionalProperties: false
-
-examples:
-  - |
-    tpu: tpu@ffffe0 {
-        compatible = "renesas,tpu";
-        reg = <0xffffe0 16>, <0xfffff0 12>;
-        clocks = <&pclk>;
-        clock-names = "fck";
-    };