chore!: remove deprecated get-metadata entrypoint

[Renegade334]

Deprecated since v1.11, no compelling reason to keep it that I can see.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.32%. Comparing base (4d967bf) to head (b9a0e43).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1139   +/-   ##
=======================================
  Coverage   57.32%   57.32%           
=======================================
  Files          53       53           
  Lines       10368    10368           
=======================================
  Hits         5943     5943           
  Misses       4425     4425           

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