minor refactor: remove deprecated method usage

[paulk-asert]

I am unsure whether the lines removed support legacy behavior not covered by tests or are now covered incidentally by other changes.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.3622%. Comparing base (be4ec1c) to head (38839ab).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2413        +/-   ##
==================================================
- Coverage     66.3773%   66.3622%   -0.0151%     
+ Complexity      29877      29874         -3     
==================================================
  Files            1392       1392                
  Lines          116799     116797         -2     
  Branches        20665      20664         -1     
==================================================
- Hits            77528      77509        -19     
- Misses          32915      32938        +23     
+ Partials         6356       6350         -6     

Files with missing lines	Coverage Δ
...aus/groovy/runtime/metaclass/ClosureMetaClass.java	71.9298% <ø> (-0.1956%)	⬇️

... and 4 files with indirect coverage changes

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[eric-milles]

Does it select the first declared one or is it based on index or random order?

[paulk-asert]

Does it select the first declared one or is it based on index or random order?

It follows the closest match rules. I thought that might leave a gap but I could find any.