dt-bindings: clock: Drop maxim,max77686.txt

The clock binding for Maxim MAX77686/MAX77802/MAX77620 is already
covered by mfd/maxim,max77686.yaml.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250505161943.1433081-1-robh@kernel.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: robherring

Documentation/devicetree/bindings/clock/maxim,max77686.txt

@@ -14610,7 +14610,6 @@ F:	Documentation/devicetree/bindings/*/maxim,max77686.yaml
 F:	Documentation/devicetree/bindings/*/maxim,max77693.yaml
 F:	Documentation/devicetree/bindings/*/maxim,max77705*.yaml
 F:	Documentation/devicetree/bindings/*/maxim,max77843.yaml
-F:	Documentation/devicetree/bindings/clock/maxim,max77686.txt
 F:	drivers/leds/leds-max77705.c
 F:	drivers/*/*max77843.c
 F:	drivers/*/max14577*.c