Remove This Empty Space?

Is there any way to remove this blank space at the top of the list of Collections?

If you hover the mouse over the top of the binder header (displaying “Toby Arc” in your screenshot), the cursor should switch to the move up/down pointer that will let you drag the divider up, reducing the area for the collection tabs and getting rid of the empty space. The setting will be remembered for the project.

That worked, thanks.