click on the x in the top right corner of the bin.

    if you close a bin by clicking on the x in its top right corner, the bin will cease to exist. the galleries or timelines within the bin can still be reopened into another bin, or the bin can be recreated by opening a new bin (file ] gallery ] new bin or file ] timeline ] new bin from the main menu). then you can re-import the files to the new bin.

    a bin cannot be empty. if you remove the last gallery or timeline from a bin by dragging it to another bin, the bin automatically closes.