chore!: Remove unused omnichannelExternalFrameGenerateKey

[dougfabris]

Proposed changes (including videos or screenshots)

• Removes unused omnichannelExternalFrameGenerateKey meteor method
• Removes unused Omnichannel_External_Frame_GenerateKey setting

Issue(s)

Steps to test or reproduce

Further comments

[dionisio-bot]

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 1086e69

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.00%. Comparing base (1eae86e) to head (1086e69).
Report is 2 commits behind head on release-7.0.0.

Additional details and impacted files

@@              Coverage Diff               @@
##           release-7.0.0   #32921   +/-   ##
==============================================
  Coverage          55.00%   55.00%           
==============================================
  Files               2596     2596           
  Lines              56003    56003           
  Branches           11589    11589           
==============================================
  Hits               30802    30802           
  Misses             22558    22558           
  Partials            2643     2643           

Flag	Coverage Δ
unit	73.06% <ø> (ø)

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