[PR #8636/51d872e backport][3.10] Remove Request.wait_for_disconnection() method

[bdraco]

(cherry picked from commit 51d872e)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.70%. Comparing base (2ef14a6) to head (69150e4).
Report is 203 commits behind head on 3.10.

Additional details and impacted files

@@            Coverage Diff             @@
##             3.10    #8650      +/-   ##
==========================================
+ Coverage   97.67%   97.70%   +0.02%     
==========================================
  Files         108      108              
  Lines       33905    33898       -7     
  Branches     4034     4035       +1     
==========================================
+ Hits        33118    33121       +3     
+ Misses        587      579       -8     
+ Partials      200      198       -2     

Flag	Coverage Δ
CI-GHA	97.61% <100.00%> (+0.02%)	⬆️
OS-Linux	97.28% <100.00%> (+0.02%)	⬆️
OS-Windows	94.80% <100.00%> (+0.02%)	⬆️
OS-macOS	96.95% <100.00%> (+0.02%)	⬆️
Py-3.10.11	97.05% <100.00%> (+0.02%)	⬆️
Py-3.10.14	97.00% <100.00%> (+0.02%)	⬆️
Py-3.11.9	97.24% <100.00%> (+0.02%)	⬆️
Py-3.12.4	97.34% <100.00%> (+0.02%)	⬆️
Py-3.8.10	94.54% <100.00%> (+0.02%)	⬆️
Py-3.8.18	96.90% <100.00%> (+0.02%)	⬆️
Py-3.9.13	97.05% <100.00%> (+0.02%)	⬆️
Py-3.9.19	97.01% <100.00%> (+0.02%)	⬆️
Py-pypy7.3.16	96.59% <100.00%> (+0.02%)	⬆️
VM-macos	96.95% <100.00%> (+0.02%)	⬆️
VM-ubuntu	97.28% <100.00%> (+0.02%)	⬆️
VM-windows	94.80% <100.00%> (+0.02%)	⬆️

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