Bug#1102280: plasma-desktop: Qt6 pkg Build-Depends on libkf5runner-dev

[Bastian Germann]

Source: plasma-desktop
Version: 4:6.1.0-1
Severity: important

plasma-desktop has Build-Depends: libkf5runner-dev, which is obviously
not needed anymore and makes that package a key package. Please drop the
Build-Depends.