Remove user from group

curl -X DELETE https://api.box.com/2.0/group_memberships/434534 \
     -H 'Authorization: Bearer <ACCESS_TOKEN>'

await client.GroupsManager.DeleteGroupMembershipAsync("33333");

BoxGroupMembership membership = new BoxGroupMembership(api, id);
membership.delete();

membership_id = '1234'
client.group_membership(membership_id).delete() 
print('The membership was deleted!')

client.groups.removeMembership('33333')
	.then(() => {
		// removal succeeded — no value returned
	});

client.groups.deleteMembership(membershipId: "12345") { 
(result: Result<Void, BoxSDKError>) in
    guard case .success = result else {
        print("Error deleting group membership")
        return
    }

    print("Group Membership was successfully deleted.")
}