[kde-base] Remove KDE Workspace 4.11.8

* Moved to tree

Package-Manager: portage-2.2.10
[profiles/package.mask] Remove KDE Workspace 4.11.8
[kde-base] Remove KDE SC 4.12.4

* Moved to tree

Package-Manager: portage-2.2.10
[profiles/package.mask] Remove KDE SC 4.12.4