KF5 port: remove KF5::KDELibs4Support
Summary: last patch (only 5, not 7 patches needed) to remove kdelibs4support from frameworks branch
Test Plan: this one removes the last pieces from CMakeLists.txt - only works after the other 4. Still compiles, but now kdelibs4support - free :)
Reviewers: KDE Games, ltoscano
Reviewed By: ltoscano
Subscribers: ltoscano, KDE Games
Differential Revision: https://phabricator.kde.org/D7420