Remove Request.wait_for_disconnection() method #4274

Job	Run time
Generate llhttp sources	7s
Linter	1m 0s
Test (3.8, ubuntu, false)	5m 5s
Test (3.8, windows, false)	5m 52s
Test (3.8, Y, ubuntu, false)	5m 6s
Test (3.9, ubuntu, false)	4m 51s
Test (3.9, macos, false)	3m 46s
Test (3.9, windows, false)	7m 38s
Test (3.9, Y, ubuntu, false)	4m 52s
Test (3.10, ubuntu, false)	7m 4s
Test (3.10, macos, false)	4m 2s
Test (3.10, windows, false)	5m 58s
Test (3.10, Y, ubuntu, false)	4m 37s
Test (3.11, ubuntu, false)	5m 47s
Test (3.11, macos, false)	4m 7s
Test (3.11, windows, false)	6m 55s
Test (3.11, Y, ubuntu, false)	4m 54s
Test (3.12, ubuntu, false)	5m 35s
Test (3.12, macos, false)	3m 49s
Test (3.12, windows, false)	9m 9s
Test (3.12, Y, ubuntu, false)	4m 53s
Test (pypy-3.9, Y, ubuntu, false)	10m 11s
Test (ubuntu, 3.13, true, Y)	1m 28s
check	9s
Pre-Deploy	0s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Deploy	0s
	1h 56m 55s

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