dt-bindings: pinctrl: aspeed-g6: remove FWQSPID group

FWQSPID is not a group of FWSPID so remove it.

Fixes: 7488838f ("dt-bindings: pinctrl: aspeed: Document AST2600 pinmux")
Signed-off-by: Jae Hyun Yoo <quic_jaehyoo@quicinc.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20220329173932.2588289-4-quic_jaehyoo@quicinc.com


Signed-off-by: Joel Stanley <joel@jms.id.au>