Removed unused case in Unpickler

Author: odersky

compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala

@@ -281,12 +281,6 @@ class TreeUnpickler(reader: TastyReader,
               OrType(readType(), readType())
             case SUPERtype =>
               SuperType(readType(), readType())
-            case BIND =>
-              val sym = ctx.newSymbol(ctx.owner, readName().toTypeName, EmptyFlags, readType(),
-                coord = coordAt(start))
-              registerSym(start, sym)
-              if (currentAddr != end) readType()
-              TypeRef(NoPrefix, sym)
             case POLYtype =>
               readMethodic(PolyType, _.toTypeName)
             case METHODtype =>