Remove unified image #31150

Job	Run time
Check whether tests need to be run based on diff	23s
Build Antrea image to be used for Kind e2e tests	11m 7s
Build Flow Aggregator image to be used for Kind e2e tests	3m 4s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	49m 44s
E2e tests on a Kind cluster on Linux (noEncap)	40m 4s
E2e tests on a Kind cluster on Linux	47m 26s
E2e tests on a Kind cluster on Linux with all features enabled	1h 0m 0s
E2e tests on a Kind cluster on Linux for Flow Visibility	15m 59s
API compatible with client version N-1	9m 57s
E2e tests on a Kind cluster on Linux (hybrid)	39m 30s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 29s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 18s
Upgrade from Antrea version N-1	9m 1s
Upgrade from Antrea version N-2	8m 57s
API compatible with client version N-2	8m 49s
Validate metrics in Prometheus document match running deployment's	2m 14s
Delete uploaded images	0s
	5h 18m 2s

Provide feedback