Revert "Aquire semaphore when network will be accessed (#25)"

[natenjoy]

This reverts commit e73952d. Looks like this optimization wasn't safe and caused issues with the reused request pointer being shared, which ended up in a scenario where the channel could be closed and then sent on. Thanks for pointing this out, @TheJokr .

Likely to fix #30

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.25%. Comparing base (8a18d6d) to head (09149a0).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
- Coverage   64.01%   63.25%   -0.77%     
==========================================
  Files           6        6              
  Lines         503      430      -73     
==========================================
- Hits          322      272      -50     
+ Misses        168      145      -23     
  Partials       13       13              

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[lestrrat]

thanks!