Remove unnecessary dependency to KService

Summary: It's not needed

Test Plan: builds, rocs opens

Reviewers: #kde_edu, tcanabrava, aacid

Reviewed By: aacid

Subscribers: apol, kde-edu

Tags: #kde_edu

Differential Revision: https://phabricator.kde.org/D25529
1 job for master in 7 minutes and 9 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #22693
linux kf5-qt5 qt5.12

00:07:09

48.0%