clean artifact directory on rebuild (cherry picked from commit 818d969)
clean artifact directory on rebuild
(cherry picked from commit 818d969)

triggerNZ/intellij-scala,LPTK/intellij-scala,triggerNZ/intellij-scala,SergeevPavel/intellij-scala,LPTK/intellij-scala,JetBrains/intellij-scala-historical,LPTK/intellij-scala,SergeevPavel/intellij-scala,triggerNZ/intellij-scala,SergeevPavel/intellij-scala,JetBrains/intellij-scala-historical,JetBrains/intellij-scala-historical