provider/aws: Removed deprecated parameter group from RDS Cluster

builtin/providers/aws/resource_aws_rds_cluster.go

@@ -64,16 +64,6 @@ func resourceAwsRDSCluster() *schema.Resource {
 				Computed: true,
 			},
 
-			// TODO: remove parameter_group_name
-			// See https://github.com/hashicorp/terraform/issues/7046
-			// Likely need migration to remove from state
-			"parameter_group_name": {
-				Type:       schema.TypeString,
-				Optional:   true,
-				Computed:   true,
-				Deprecated: "Use db_cluster_parameter_group_name instead. This attribute will be removed in a future version",
-			},
-
 			"db_cluster_parameter_group_name": {
 				Type:     schema.TypeString,
 				Optional: true,
@@ -326,10 +316,6 @@ func resourceAwsRDSClusterCreate(d *schema.ResourceData, meta interface{}) error
 			createOpts.DBSubnetGroupName = aws.String(attr.(string))
 		}
 
-		if attr, ok := d.GetOk("parameter_group_name"); ok {
-			createOpts.DBClusterParameterGroupName = aws.String(attr.(string))
-		}
-
 		if attr, ok := d.GetOk("db_cluster_parameter_group_name"); ok {
 			createOpts.DBClusterParameterGroupName = aws.String(attr.(string))
 		}
@@ -438,7 +424,6 @@ func resourceAwsRDSClusterRead(d *schema.ResourceData, meta interface{}) error {
 
 	d.Set("cluster_identifier", dbc.DBClusterIdentifier)
 	d.Set("db_subnet_group_name", dbc.DBSubnetGroup)
-	d.Set("parameter_group_name", dbc.DBClusterParameterGroup)
 	d.Set("db_cluster_parameter_group_name", dbc.DBClusterParameterGroup)
 	d.Set("endpoint", dbc.Endpoint)
 	d.Set("engine", dbc.Engine)
@@ -518,12 +503,6 @@ func resourceAwsRDSClusterUpdate(d *schema.ResourceData, meta interface{}) error
 		requestUpdate = true
 	}
 
-	if d.HasChange("parameter_group_name") {
-		d.SetPartial("parameter_group_name")
-		req.DBClusterParameterGroupName = aws.String(d.Get("parameter_group_name").(string))
-		requestUpdate = true
-	}
-
 	if d.HasChange("db_cluster_parameter_group_name") {
 		d.SetPartial("db_cluster_parameter_group_name")
 		req.DBClusterParameterGroupName = aws.String(d.Get("db_cluster_parameter_group_name").(string))