I am using a KDE desktop on a "normal" Ubuntu installation. At one point I set up some chat accounts but I stopped using them a year or so ago. Now I want to get rid of the system tray icon for chat. But, I cannot find any way to quit the application, nor can I find a setting to disable the "start at login" feature.

When I right-click the icon, the only "options" or "preferences" selection I see is "Instant Messaging Presence Settings" which brings up some sort of keyboard shortcut dialog. If I double-click, the "KDE IM Contacts" window pops up. Here I can go into "Instant Messaging Settings". But neither "Accounts" nor "General" nor "Notifications" tabs have any options that seem to control startup.

How can I get rid of this application? I don't want it and don't use it, but it is part of the base package, so I'm pretty sure it will just re-install on upgrades if I try uninstalling it, plus somebody else on the computer may use it at some point.