arm64: dts: qcom: sdm845: drop unused slimbus properties

Drop properties from slimbus node: unneeded status and
downstream-related qcom,apps-ch-pipes/qcom,ea-pc (not documented, not
used).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220928152027.489543-2-krzysztof.kozlowski@linaro.org