chore: BOMS-39 remove arbi-bom references

[vgulati-apphelix]

Description:
Remove arbi-bom references

Ticket

Resolves edx/edx-arch-experiments#1134

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.35%. Comparing base (8b84f56) to head (ccde4c9).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #323   +/-   ##
=======================================
  Coverage   55.35%   55.35%           
=======================================
  Files           3        3           
  Lines          56       56           
=======================================
  Hits           31       31           
  Misses         25       25           

Flag	Coverage Δ
unittests	55.35% <ø> (ø)

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