arm64: defconfig: remove obsolete CONFIG_SM_DISPCC_8650

This option was removed from the Kconfig in commit 802b8320 ("clk:
qcom: fold dispcc-sm8650 info dispcc-sm8550") but it was not removed
from the defconfig.

Fixes: 802b8320 ("clk: qcom: fold dispcc-sm8650 info dispcc-sm8550")
Signed-off-by: Ross Burton <ross.burton@arm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241213-clkmaster-v1-1-dcbf7fad37b1@arm.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>