cdi_util: Remove not needed unistd.h include

@m214003 please run CI, review and merge.

enabled an automatic merge when all merge checks for f420af16 pass

canceled the automatic merge

added 1 commit

• 79f613d6 - include unistd.h only ifndef _WIN32

Compare with previous version

Thanks for the fix. unistd was not needed on my Linux localy but I dont doubt it may be needed in some places.

merged