fix bug

can't insert cast to output of less or greater for the incompleted dtype
support. their conversion logic now cover the logic

Author: zhijxu-MS

tf2onnx/tfonnx.py

@@ -471,9 +471,7 @@ def rewrite_incomplete_type_support_rs5(g, ops):
 def rewrite_incomplete_type_support_rs6(g, ops):
     impacted_ops = [
         "Div",
-        "Greater",
         "IsNaN",
-        "Less",
         "Max",
         "Min",
         "ReduceSum",