out_file: remove workaround for Ruby 2.7 and 3.0 on macOS #4770
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Which issue(s) this PR fixes:
Fixes #
What this PR does / why we need it:
Next fluentd version will drop support of Ruby 3.1 or below.
Ref. #4745
So, we can remove the workaround for Ruby 2.7 and 3.0 on macOS that added at #3579
Docs Changes:
Release Note: