Removed unused imports.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@696 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/handler/PresenceUpdateHandler.java

@@ -19,9 +19,7 @@ import org.jivesoftware.messenger.roster.RosterItem;
 import org.jivesoftware.messenger.auth.UnauthorizedException;
 import org.jivesoftware.messenger.spi.SessionImpl;
 import org.jivesoftware.messenger.roster.CachedRoster;
-import org.jivesoftware.messenger.roster.RosterItem;
 import org.jivesoftware.messenger.roster.RosterManager;
-import org.jivesoftware.messenger.roster.CachedRoster;
 import org.jivesoftware.messenger.user.UserNotFoundException;
 import org.xmpp.packet.*;