Datagram servers: Removed task locks because it is useless

[francis-clairicia]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (91edb61) to head (450b1e4).
Report is 54 commits behind head on main.

Additional details and impacted files

Flag	Coverage Δ
OS-Linux	99.90% <100.00%> (-0.01%)	⬇️
OS-Windows	99.78% <100.00%> (-0.01%)	⬇️
OS-macOS	99.90% <100.00%> (-0.01%)	⬇️
Py-3.11	99.90% <100.00%> (-0.01%)	⬇️
Py-3.12	99.94% <100.00%> (-0.01%)	⬇️
test-functional	81.86% <100.00%> (-0.02%)	⬇️
test-unit	89.71% <28.57%> (+<0.01%)	⬆️

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