Drop invalid assertion

We might now get more overloaded denotations than before, which only
differ in type parameters.

Author: odersky

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

@@ -1916,8 +1916,6 @@ object Types {
       setDenot(memberDenot(name, allowPrivate = !symbol.exists || symbol.is(Private)))
 
     private def setDenot(denot: Denotation)(implicit ctx: Context): Unit = {
-      if (ctx.isAfterTyper)
-        assert(!denot.isOverloaded || ctx.mode.is(Mode.Printing), this)
       if (Config.checkNoDoubleBindings)
         if (ctx.settings.YnoDoubleBindings.value)
           checkSymAssign(denot.symbol)