Remove remaining icons from applets with custom tooltips
Summary:
Last bits needed for T12778.
CCBUG: 420934
Test Plan:
Reviewers: bugseforuns, Plasma, VDG, kmaterka
Reviewed By: kmaterka
Subscribers: plasma-devel
Tags: Plasma
Maniphest Tasks: T12778
Differential Revision: https://phabricator.kde.org/D29517