Revert #3194

[asvetlov]

Fixes #3350

[codecov-io]

Codecov Report

Merging #3352 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3352      +/-   ##
==========================================
- Coverage   98.05%   98.03%   -0.03%     
==========================================
  Files          44       44              
  Lines        8345     8332      -13     
  Branches     1369     1369              
==========================================
- Hits         8183     8168      -15     
- Misses         67       68       +1     
- Partials       95       96       +1

Impacted Files	Coverage Δ
aiohttp/web_app.py	96.09% <100%> (+0.16%)	⬆️
aiohttp/tcp_helpers.py	90% <0%> (-6.67%)	⬇️
aiohttp/client_reqrep.py	97.49% <0%> (-0.17%)	⬇️

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[new issue]: https://github.com/aio-libs/aiohttp/issues/new