Revert "MT#7275 ngcp-www-csc: switch NPROC for to config.yml"

This reverts commit 090f1cfb3b87bf89e67a6dac1783cbf1d335650e.
MT#7275 www_csc: allow OPTIONS to take NPROC value from defaults file.

(cherry picked from commit b512d8573a6478a8636ea0063dd76f6da0430894)