Authentication is required to refresh the system sources

[Maurizio Marini]

This is F22 with Kde-plasma5

After yesterday update, each hour a popup ask me to insert root password:
Authentication is required to refresh the system sources

Ok, now I would uninstall polkit and updates plugin notifier.
My question is:
can I freely remove polkit w/out any side effect?
I haven't Gnome, so I think so, but I prefer ask you to be sure

can/should  I remove all of these?

# rpm -qa | grep polkit
polkit-qt-0.112.0-3.fc22.x86_64
polkit-qt5-1-0.112.0-3.fc22.x86_64
polkit-kde-5.3.2-1.fc22.x86_64
polkit-0.113-4.fc22.x86_64
polkit-pkla-compat-0.1-5.fc22.x86_64
polkit-libs-0.113-4.fc22.x86_64


Many thnx

-m
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