arm64: dts: qcom: sc7180: Delete lazor-rev0

lazor-rev0 was a pile of parts. While I kept the pile of parts for
lazor running on my desk for longer than I usually do, those days are
still long past. Let's finally delete support for lazor-rev0.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230302131031.v2.3.I30128a6f4b60b096770186430036afb40ede6f70@changeid