undo spurious edit

Author: olhotak

compiler/src/dotty/tools/dotc/core/Types.scala

@@ -2459,7 +2459,6 @@ object Types {
     private def argDenot(param: TypeSymbol)(using Context): Denotation = {
       val cls = param.owner
       val args = prefix.baseType(cls).argInfos
-      //throw new RuntimeException("")
       val typeParams = cls.typeParams
 
       def concretize(arg: Type, tparam: TypeSymbol) = arg match {
@@ -2486,7 +2485,6 @@ object Types {
       }
       else {
         if (!ctx.reporter.errorsReported)
-          //throw RuntimeException("")
           throw TypeError(
             em"""bad parameter reference $this at ${ctx.phase}
                 |the parameter is ${param.showLocated} but the prefix $prefix