Remove the dependency on ScalaTest from sharedSettings
Remove the dependency on ScalaTest from sharedSettings

Another nuisance for Scala Native crosscompilation has been taken care of.

xeno-by/scalameta,MasseGuillaume/scalameta,MasseGuillaume/scalameta,scalameta/scalameta,olafurpg/scalameta,scalameta/scalameta,xeno-by/scalameta,xeno-by/scalameta,olafurpg/scalameta,olafurpg/scalameta,scalameta/scalameta,scalameta/scalameta,MasseGuillaume/scalameta,scalameta/scalameta