message: rm HdlTypeTime entirely
diff: @@ -134,8 +134,7 @@ class HdlIntValue(object):
  # None is equivalent of HDL null
  iHdlExpr = Union[HdlName, HdlIntValue, float, str,
  - None, List["iHdlExpr"], HdlAll, "HdlCall",
  - HdlTypeTime]
  + None, List["iHdlExpr"], HdlAll, "HdlCall"]
  class HdlBuildinFn(Enum):
  