remove test which got added back as part of some merge conflict

xds/internal/resolver/xds_resolver_test.go

@@ -567,14 +567,6 @@ func (s) TestResolverCloseClosesXDSClient(t *testing.T) {
 	}
 }
 
-// TestXDSResolverCloseClosesXDSClient tests that the XDS resolver's Close
-// method closes the XDS client.
-func (s) TestXDSResolverCloseClosesXDSClient(t *testing.T) {
-	xdsR, _, _, cancel := testSetup(t, setupOpts{target: target})
-	xdsR.Close()
-	cancel() // Blocks until the xDS client is closed.
-}
-
 // TestResolverBadServiceUpdate tests the case where a resource returned by the
 // management server is NACKed by the xDS client, which then returns an update
 // containing an error to the resolver. Verifies that the update is propagated