Kanbanchi boards may be removed in two ways: within the app and within Google Drive.
Within the app
You will need to view the details of an open board to remove it from Kanbanchi. Click on the board’s name at the top of the screen or on its tab at the bottom of the screen to open Dashboard Details.
Click on Actions located at the upper right corner of the Dashboard Details and choose Delete Dashboard from the drop-down menu. When a confirmation window appears, click on Delete to finish removing the board from Kanbanchi.
Within Google Drive
In both instances, the removed board will be moved into the Trash Folder of your Google Drive.