systemd-modules-load: Failed to find module 'vmcp'

Issue

• We migrated from RHEL 6.6 to RHEL 7.4.
• In Red Hat Enterprise Linux 7, the vmcp kernel module is built into the kernel. This ensures that the vmcp device node is always present, and users can send
  IBM z/VM hypervisor control program commands without having to load the vmcp kernel module first.
• The entry for vmcp was removed from '/etc/modules-load.d/aetna.conf'but the message is still being generated when the platform is rebooted.

journalctl _SYSTEMD_UNIT=systemd-modules-load.service

XXX systemd-modules-load[72]: Inserted module 'dummy'
XXX systemd-modules-load[72]: Inserted module 'appldata_os'
XXX systemd-modules-load[72]: Inserted module 'appldata_mem'
XXX systemd-modules-load[72]: Inserted module 'appldata_net_sum'
XXX systemd-modules-load[72]: Failed to find module 'vmcp'
XXX systemd-modules-load[72]: Inserted module 'prng'

Current contents of '/etc/modules-load.d/aetna.conf'

# pwd
/etc/modules-load.d

# ls -al
total 16
drwxr-xr-x.  2 root root   24 Nov  5 13:42 .
drwxr-xr-x. 81 root root 8192 Oct 29 11:46 ..
-rw-r--r--   1 root root  145 Nov  5 13:42 aetna.conf

# cat aetna.conf 
# for static VIPA dummy0
dummy

# Load routines for Performance Monitoring
appldata_os
appldata_mem
appldata_net_sum
# End of local perfdata mod

• Module prng is located in /usr/lib/modules-load.d/libica.conf.
• Module vmcp is available

# vmcp q v crypto
AP 001 CEX6A Domain 001 shared

• We are trying to understand why we are still getting the

XXX systemd-modules-load[72]: Failed to find module 'vmcp'