Remove the final endl at the end of qDebug &co
Summary:
Definitely not needed. A bit less clutter before switching to
categorized logging.
Test Plan:
Still compiles, and the debug output does not contain extra
newlines.
Reviewers: apol
Reviewed By: apol
Subscribers: Frameworks
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D7875