Remove LayerZero now Plume has been sunset

[naddison36]

Code Change Checklist

To be completed before internal review begins:

• The contract code is complete
• Executable deployment file
• Fork tests that test after the deployment file runs
• Unit tests *if needed
• The owner has done a full checklist review of the code + tests

Internal review:

• Two approvals by internal reviewers

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.01%. Comparing base (800ef7a) to head (de6cef8).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2891      +/-   ##
==========================================
+ Coverage   41.39%   42.01%   +0.62%     
==========================================
  Files         115      111       -4     
  Lines        4948     4874      -74     
  Branches     1372     1353      -19     
==========================================
  Hits         2048     2048              
+ Misses       2897     2823      -74     
  Partials        3        3              

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[clement-ux]

LGTM 👍

[sparrowDom]

LGTM

[shahthepro]

I like that we can remove the code. But I'd say we should at least tag master before we merge this in. If we ever have to do something related to Plume (like Pause bridging due to security incident), we will end up spending more time trying to figure out addresses and ABIs

[naddison36]

I like that we can remove the code. But I'd say we should at least tag master before we merge this in. If we ever have to do something related to Plume (like Pause bridging due to security incident), we will end up spending more time trying to figure out addresses and ABIs

Good idea. I've tagged with pre-plume-layerzero-removal