Remove last dbus leftover

List based on grepping on lxr machine:

utilities/keditbookmarks!30 (merged)

!45 (merged)

utilities/kate!1384 (merged)

utilities/konsole!944 (merged)

kio!1531 (merged)

pim/pim-sieve-editor!16 (merged)

system/dolphin!693 (merged)

network/krdc!71 (merged)

graphics/okular!898 (merged)

Kdevelop is also calling this, but in the middle of being ported to Qt6. so let me just hilight @apol