arm64: qcom: dts: drop legacy property #stream-id-cells

Property #stream-id-cells is legacy leftover and isn't currently
documented nor used.

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211208184707.100716-1-david@ixit.cz