Kubuntu upgrade left big files in old $KDEHOME/share/apps/nepomuk

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I have upgraded Kubuntu through several releases on my PC.

I just noticed that I had 950MB of files in ~/.kde/share/apps/nepomuk. Nepomuk was replaced by Baloo in KDE 4.13 14.04 or 14.10, so I have no nepomuk packages installed and I have working search using Baloo's replacement files in ~/.local/share/baloo.

At no point did 14.04 or 14.10 upgrade advise me I could delete ~/.kde/share/apps/nepomuk and free up a gigabyte of space.
It would be great if the installation could offer to do this, and the KDE/Kubuntu release notes mention it, etc.

I updated https://userbase.kde.org/Nepomuk to mention it's safe to remove the old files, I'm not sure where else to say it.

Thanks for the search feature, it's worked fine for me since KDE 4.05.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: baloo4 4:4.14.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-28.37-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Dec 14 16:19:06 2014
SourcePackage: baloo
UpgradeStatus: Upgraded to utopic on 2014-10-26 (49 days ago)