Remove outdated MO HPC config lines

[NParsonsMO]

Description

Removes old VDI settings from MO HPC config

Closes ESMValTool issue 4455

Link to documentation:

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.18%. Comparing base (6d1872e) to head (ee3fd2f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3114   +/-   ##
=======================================
  Coverage   96.18%   96.18%           
=======================================
  Files         271      271           
  Lines       15913    15913           
=======================================
  Hits        15306    15306           
  Misses        607      607           

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