D9478: Drop use of qtpaths in startkde

[Aleix Pol Gonzalez]

apol added inline comments.

INLINE COMMENTS

> startplasmacompositor.cmake:174
> +  for file in "$prefix"/plasma-workspace/env/*.sh; do
> +    test -r "$file" && . "$file" || true
>    done

Why is `|| true` needed now?

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D9478

To: davidedmundson, #plasma
Cc: apol, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, mart