[settings] Clean up
Remove obsolete README
Remove obsolete, uninstalled .desktop files
Simplify KPluginFactory macros
Remove unneeded usage of X-KDE-PluginKeyword
Edited by Nicolas Fella
Remove obsolete README
Remove obsolete, uninstalled .desktop files
Simplify KPluginFactory macros
Remove unneeded usage of X-KDE-PluginKeyword