If you find that you want to remove a Requested Information slot, you can do so by clicking the Manage button next to the Requested Information heading and then clicking the trash can icon in the same row as the slot you want to get rid of.

Do note that if you're editing your Requested Information slots while the project is in the Open stage, you'll see a warning message. You'll see a different warning message if the project is in the Open stage and if vendors have already begun submissions:

In this case, you can still remove any Requested Information slots, but we highly recommend that any changes be followed up with a Public Notice so that your vendors are aware of the changes in requirements