arm64: dts: qcom: x1e80100-dell-xps13-9345: Drop clock-names from PS8830

The preemptively-merged node contains a property absent from the final
bindings. Remove it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Fixes: bd2dbbb1 ("arm64: dts: qcom: x1e80100-dell-xps13-9345: Introduce retimer support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20250306-topic-dt_bindings_fixups-v1-9-0c84aceb0ef9@oss.qualcomm.com


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