take out explicit passphrase from get_K, as this is handled by PassphrasePrompt
take out explicit passphrase from get_K, as this is handled by PassphrasePrompt

svn path=/trunk/kdesupport/qca/; revision=664494

highfidelity/qca,Bjoe/qca,oktavarium/qca,KDE/qca,karolherbst/qca,karolherbst/qca,sladage/qca,Esf-Software/qca,sladage/qca,sladage/qca,JoshuaKolden/qca,highfidelity/qca,JoshuaKolden/qca,Bjoe/qca,highfidelity/qca,oktavarium/qca,Esf-Software/qca,highfidelity/qca,karolherbst/qca,KDE/qca,KDE/qca,KDE/qca,oktavarium/qca,JoshuaKolden/qca,JoshuaKolden/qca,Bjoe/qca,Esf-Software/qca,Bjoe/qca,sladage/qca,Esf-Software/qca,karolherbst/qca,oktavarium/qca