Nucleus-resident routines can be removed from an IEANUC0x member
of SYS1.NUCLEUS by running a link-edit job to replace the existing
version of IEANUC0x with one that does not contain the routine to
be deleted.
Note: - If the existing nucleus-resident routine is known to SMP/E, use
the SMP/E UCLIN statement to remove the module entry.
- All multiple CSECT load modules, such as IEANUC0x, to be loaded
into the nucleus region, must be link-edited with the scatter (SCTR)
attribute. If this is not done, the system enters a non-restartable
wait state at system initialization.