PYTHON-4807 - Update changelog + remove dead code #1112

Job	Run time
Build wheels for manylinux_x86_64	2m 20s
Build wheels for manylinux_aarch64	10m 51s
Make SDist	35s
Build wheels for manylinux_ppc64le	10m 10s
Build wheels for manylinux_s390x	10m 50s
Build wheels for manylinux_i686	2m 29s
Build wheels for win_amd6	4m 24s
Build wheels for win32	5m 58s
Build wheels for macos	2m 56s
Download Wheels	15s
	50m 48s

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