Remove retention policy assignment

await client.retentionPolicyAssignments.deleteRetentionPolicyAssignmentById(
  retentionPolicyAssignment.id,
);

client.retention_policy_assignments.delete_retention_policy_assignment_by_id(
    retention_policy_assignment.id
)

await client.RetentionPolicyAssignments.DeleteRetentionPolicyAssignmentByIdAsync(retentionPolicyAssignmentId: retentionPolicyAssignment.Id);

try await client.retentionPolicyAssignments.deleteRetentionPolicyAssignmentById(retentionPolicyAssignmentId: retentionPolicyAssignment.id)

BoxRetentionPolicyAssignment assignment = new BoxRetentionPolicyAssignment(api, id);
assignment.delete();

client.retentionPolicies.deleteAssignment('12345')
	.then(() => {
		// deletion succeeded — no value returned
	});

client.retentionPolicy.deleteAssignment(assignmentId: "123456")  { result in
    guard case let .success = result else {
        print("Error deleting retention policy assignment")
        return
    }
    
    print("Retention policy assignment was deleted")
}