remove ListenerSetProtocolConflict

Signed-off-by: zirain <zirain2009@gmail.com>

Author: zirain

test/conformance/suite.go

@@ -17,7 +17,6 @@ func SkipTests(gatewayNamespaceMode bool) []suite.ConformanceTest {
 	skipTests := []suite.ConformanceTest{
 		tests.GatewayStaticAddresses,
 		// TODO: fix following conformance tests
-		tests.ListenerSetProtocolConflict,
 		tests.TLSRouteHostnameIntersection,
 		tests.TLSRouteMixedTerminationSameNamespace,
 		tests.GatewayInvalidTLSBackendConfiguration,