remove deprecated Encoding value
remove deprecated Encoding value

svn path=/trunk/KDE/kdepim/kleopatra/; revision=869320

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi