dt-bindings: clock: Remove unused fujitsu,mb86s70-crg11 binding

The fujitsu,mb86s70-crg11 binding is unused. The driver for it was removed
in 2017. It's not used for Synquacer DT either like some other mb86s70
bindings are.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250804175304.3423965-1-robh@kernel.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: robherring