cohttp-eio: remove unused module (#1081) #1642

Job	Run time
build-test-cohttp-bench (ubuntu-latest, 5.x, *.opam )	7m 34s
build-test-cohttp-async (ubuntu-latest, 4.14, *.opam !cohttp-mirage.opam !cohttp-curl-lwt.opam !c...	2m 59s
build-test-default (ubuntu-latest, 4.14, *.opam !cohttp-eio.opam !cohttp-curl-async.opam !cohttp-...	2m 54s
build-test-default (ubuntu-latest, 5.x, *.opam !cohttp-eio.opam !cohttp-curl-async.opam !cohttp-a...	7m 53s
build-test-cohttp-eio (ubuntu-latest, 5.x, http.opam cohttp.opam cohttp-eio.opam )	4m 23s
build-test-default (macos-latest, 4.14, *.opam !cohttp-eio.opam !cohttp-curl-async.opam !cohttp-a...	2m 16s
build-test-cohttp-async (ubuntu-latest, 5.x, *.opam !cohttp-mirage.opam !cohttp-curl-lwt.opam !co...	8m 6s
build-test-cohttp-eio (macos-latest, 5.x, http.opam cohttp.opam cohttp-eio.opam )	4m 8s
build-test-default (macos-latest, 5.x, *.opam !cohttp-eio.opam !cohttp-curl-async.opam !cohttp-as...	5m 35s
build-test-cohttp-async (macos-latest, 4.14, *.opam !cohttp-mirage.opam !cohttp-curl-lwt.opam !co...	1m 54s
build-test-cohttp-async (macos-latest, 5.x, *.opam !cohttp-mirage.opam !cohttp-curl-lwt.opam !coh...	6m 20s
	54m 2s

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