Remove flows which are never used #30181

Job	Run time
Check whether tests need to be run based on diff	17s
Build Antrea image to be used for Kind e2e tests	19m 37s
Build Flow Aggregator image to be used for Kind e2e tests	3m 39s
E2e tests on a Kind cluster on Linux	46m 5s
E2e tests on a Kind cluster on Linux for Flow Visibility	31m 7s
E2e tests on a Kind cluster on Linux with all features enabled	56m 46s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	47m 11s
E2e tests on a Kind cluster on Linux (hybrid)	38m 10s
E2e tests on a Kind cluster on Linux (noEncap)	36m 42s
API compatible with client version N-1	9m 4s
API compatible with client version N-2	9m 1s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 50s
Upgrade from Antrea version N-1	9m 39s
Upgrade from Antrea version N-2	9m 27s
Validate metrics in Prometheus document match running deployment's	2m 21s
Delete uploaded images	3s
	5h 27m 59s

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