cleanup 2024-03: remove kde-telepathy, merge into kde-desktop
    
    per nicofee this group doesn't make any sense as a standalone
    any more. Remove it, and merge its contents into kde-desktop.
    Change 'kaccounts-integration' to 'kaccounts-integration-qt6'
    (this was the 'missing' package that triggered this change).
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>