web/flow: remove websocket connection #28874

Job	Run time
lint-golint	1m 10s
test-unittest	3m 44s
ci-outpost-mark	2s
build-binary (proxy, linux, amd64)	2m 10s
build-container (proxy)	3m 44s
build-binary (proxy, linux, arm64)	2m 13s
build-container (ldap)	3m 2s
build-binary (ldap, linux, amd64)	2m 3s
build-container (radius)	2m 39s
build-binary (ldap, linux, arm64)	2m 11s
build-binary (radius, linux, amd64)	2m 4s
build-container (rac)	3m 2s
build-binary (radius, linux, arm64)	2m 19s
build-binary (rac, linux, amd64)	1m 54s
build-binary (rac, linux, arm64)	2m 8s
	34m 25s

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