Improve contacts removing by directly getting ids from Nepomuk
Improve contacts removing by directly getting ids from Nepomuk

This ensures that contacts of offline accounts will be properly
removed from Nepomuk.

REVIEW: 108869

leonhandreke/ktp-common-internals,KDE/ktp-common-internals,KDE/ktp-common-internals,KDE/ktp-common-internals,leonhandreke/ktp-common-internals,leonhandreke/ktp-common-internals