Update concurrency autofill if request-rate set (#840)

Author: the-david-oy

model_analyzer/config/input/config_command_profile.py

@@ -1421,8 +1421,10 @@ def _autofill_values(self):
                     new_model["parameters"].update(
                         {"concurrency": model.parameters()["concurrency"]}
                     )
-                else:
+                elif not "request_rate" in model.parameters():
                     new_model["parameters"].update({"concurrency": self.concurrency})
+                else:
+                    new_model["parameters"].update({"concurrency": []})
 
                 if "request_rate" in model.parameters():
                     new_model["parameters"].update(