protected void removeSubscription(String uname) {
RosterPacket rosterPacket = new RosterPacket();
rosterPacket.setType(IQ.Type.SET);
RosterPacket.Item item = new RosterPacket.Item(uname + "@" + jabberServer, uname);
item.setItemType(RosterPacket.ItemType.remove);
rosterPacket.addRosterItem(item);
try {
connection.sendPacket(rosterPacket);
} catch (RuntimeException e) {
Tracing.logWarn("Error while trying to send Instant Messaging packet.", e, InstantMessagingClient.class);
}