Remove legacy code #1701

Job	Run time
check	2m 25s
fuzz record_ref	6m 35s
fuzz select_query	8m 10s
cross x86_64-unknown-linux-gnu (stable)	3m 15s
cross x86_64-unknown-linux-gnu (beta)	4m 24s
cross x86_64-unknown-linux-gnu (nightly)	3m 44s
cross x86_64-unknown-linux-musl (stable)	3m 28s
cross aarch64-unknown-linux-gnu (stable)	3m 29s
cross aarch64-unknown-linux-musl (stable)	4m 23s
test x86_64-unknown-linux-gnu (stable)	3m 0s
test x86_64-unknown-linux-gnu (beta)	3m 25s
test x86_64-unknown-linux-gnu (nightly)	2m 1s
test x86_64-apple-darwin (stable)	5m 58s
test x86_64-apple-darwin (beta)	3m 47s
test x86_64-apple-darwin (nightly)	3m 29s
test x86_64-pc-windows-gnu (stable)	5m 33s
test i686-pc-windows-msvc (stable)	6m 15s
clippy	36s
fmt	30s
audit	0s
udeps	8m 14s
upgrades	0s
book	3m 56s
gh-pages	0s
	1h 26m 37s

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