Remove bad test in testAccContainerCluster_withIPAllocationPolicy

One step was expecting the test to fail if the subnetwork defines
secondary ip ranges that the cluster doesn't use. However, it is
perfectly fine to do so and we don't expect an error.

Author: rosbo

Diff for: google/resource_container_cluster_test.go

@@ -681,17 +681,6 @@ func TestAccContainerCluster_withIPAllocationPolicy(t *testing.T) {
 						"ip_allocation_policy.0.services_secondary_range_name", "services"),
 				),
 			},
-			{
-				Config: testAccContainerCluster_withIPAllocationPolicy(
-					cluster,
-					map[string]string{
-						"pods":     "10.1.0.0/16",
-						"services": "10.2.0.0/20",
-					},
-					map[string]string{},
-				),
-				ExpectError: regexp.MustCompile("clusters using IP aliases must specify secondary ranges"),
-			},
 			{
 				Config: testAccContainerCluster_withIPAllocationPolicy(
 					cluster,
@@ -1586,7 +1575,6 @@ resource "google_container_cluster" "with_maintenance_window" {
 }
 
 func testAccContainerCluster_withIPAllocationPolicy(cluster string, ranges, policy map[string]string) string {
-
 	var secondaryRanges bytes.Buffer
 	for rangeName, cidr := range ranges {
 		secondaryRanges.WriteString(fmt.Sprintf(`