The main purpose of adding parameter is to provide runtime conditions hence it cannot be hided or removed from the output. This answer [here](https://community.denodo.com/answers/question/details?questionId=9060g00000009uBAAQ&title=remove+parameters+from+query+output) goes into a little more detail that I think you may find useful.
Now, you can do a completely new Selection view over your main view and remove the column in question in the Output tab as a workaround, after essentially hard coding your input parameter. But I am not sure that is what you are looking for in this instance.
Hope this helps!