Fixes Windows Build by striping Libkleo for non Unix builds

Unfortunately we dont have libkleo on windows systems so we need to strip down
kleo related parts for windows builds.
2 jobs for master in 20 minutes and 59 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #68559
build_clazy_clang_tidy

00:20:58

passed #68558
linux kf5-qt5 qt5.12

00:14:37

12.0%