firmware-qcom-rb5: don't ship slpir.jsn/slpiua.jsn
firmware-qcom-rb5: don't ship slpir.jsn/slpiua.jsn

These two json files are not present in the NHLOS zip file, so don't
bother packaging them.

Signed-off-by: Dmitry Baryshkov <2dcd7ecf02101ef1dca344c0511f3ffb180907c2@linaro.org>

ndechesne/meta-qcom,ndechesne/meta-qcom,ndechesne/meta-qcom