Revert workaround for Julia 1.8-DEV

[tkf]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.62%. Comparing base (b222cbe) to head (ca21919).
⚠️ Report is 57 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #502      +/-   ##
==========================================
+ Coverage   93.45%   93.62%   +0.16%     
==========================================
  Files          32       32              
  Lines        2217     2181      -36     
==========================================
- Hits         2072     2042      -30     
+ Misses        145      139       -6     

Flag	Coverage Δ
Pkg.test	89.57% <ø> (-0.05%)	⬇️
Run.test	93.48% <ø> (+0.21%)	⬆️

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[tkf]

Fri, 24 Dec 2021 06:07:52 GMT
[ Info: Precompiling... DONE
Fri, 24 Dec 2021 06:07:52 GMT
[ Info: Running /home/runner/work/Transducers.jl/Transducers.jl/test/runtests.jl
Fri, 24 Dec 2021 06:08:02 GMT
[ Info: Loading packages from `/tmp/jl_HfwuAX/Project.toml`...
Fri, 24 Dec 2021 06:08:02 GMT
[ Info: Loading 35 packages...
Fri, 24 Dec 2021 06:56:54 GMT
Error: The operation was canceled.

https://github.com/JuliaFolds/Transducers.jl/runs/4624643429?check_suite_focus=true#step:6:28