After installing and uninstalling polari empathy attempts to connect to IRC

After installing polari and then uninstaling with --purge empathy now attempts to connect to IRC whenever it is started. There are no IRC accounts in Online Accounts or anywhere else that I am aware of. This manifests as a message from 'nickServe' saying:

"This nickname is registered. Please choose a different nickname, or identify via /msg NickServ identify <password>."

Presumably it is trying to connect with my username but does not have the password.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: empathy 3.8.6-0ubuntu13
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Dec 2 17:09:08 2014
InstallationDate: Installed on 2014-11-20 (12 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SourcePackage: empathy
UpgradeStatus: No upgrade log present (probably fresh install)