On Startloc, it is not possible to delete data, this avoids any unwanted loss. The only way is to hide an element to stop seeing it in the lists.
1. Hide an inventory
To hide an inventory, you can click it to display the action menu, and then click "Hide".
2. Hide elements in the inventory
On any list, long-press on the element
This confirmation window then appears. You can click "Hide" or cancel your action.
3. Unhiding an inventory
First, check the "Masked" box at the top right to display the inventories that have been previously hidden. Then, click on the inventory to open the action menu, and click on "Show".
4. Hide items in EDL
First, in the list of the item you want to hide, check the "Hidden" box to display them. Then click for a long time on your item
This confirmation window then appears. You can click "Show" or cancel your action.