dt-bindings: timer: samsung,exynos4210-mct: drop unneeded minItems

There is no need to add minItems when it is equal to maxItems.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Alim Akhtar <[e-mail]>
Signed-off-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml

···
       - samsung,exynos4412-mct
 
   clocks:
-    minItems: 2
     maxItems: 2
 
   clock-names: