Remove unnecessary linking of KDev::Test. Fixes building with BUILD_TESTING=OFF

1 job for !218 with fixbuildwithnotest in 32 minutes and 36 seconds (queued for 93 minutes and 40 seconds)
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Status Job ID Name Coverage
  Build
passed #86482
linux kf5-qt5 qt5.15

00:32:36

46.0%