I have no idea what the NZ*.B files are.. they may be old holdouts from when we had the custom timeclock.. are they older files?
 
Evo does not use them.. should be safe to delete.
 
The  *HLPID.B  are the help files and need to be there. ISDRILL.B is a backup of the file we use for drill downs in look ups so that should stay.