From the main forums page you can Submit an Idea at the right.  This will take you to this page.

If you are talking about the Jobs area that lists all the jobs in one window (see image below), down the left side of the window, then no there is no way to hide any here.  There should be an icon on the toolbar/option on the menu to hide inactives but they don't have one yet.

You can edit the Job name and add zzzz to the front so it sorts the Inactive projects to the bottom but keeps them in the list for reporting purposes.

If you don't mind my asking, if I have the correct area, why do you go in here a lot?  What do you get from this area that you don't get from other areas?

Thank you. That is what I thought. I don't go in here ALOT but I do go in to complete projects and just prefer a nice clean space. I find this looks messy. That's my issue, I know but I believe there are other people that feel the same and would like to suggest that they implement the option for those that would like it.