Remove the wrong assertion that '1' will be the first directory entrySwitch NetBSD from reading /proc (which is broken) to getloadavg()
(which is alread from /procy used by Darwin). This is not true on NetBSD where /proc/0 also exists,discourages using procfs
and which seems not to be used anyway. Also remove the otherwise unused
total_processes variable to avoid someone wrongly trying to use
the assertionin favor of system API calls.