KItinerary doesn't build as a unity build, so don't even try that

Fixes the Craft build for 21.04 or higher.
2 jobs for release/21.04 in 8 minutes and 45 seconds (queued for 178 minutes and 43 seconds)
Status Job ID Name Coverage
  Build
passed #99717
build_clazy_clang_tidy

00:08:13

 
  Test
passed #99718
reuse

00:00:31