How to Delete a Column
If a project gets completed, a part of the process is no longer needed, a stage of the project becomes redundant, or if you no longer need a column on your board for any other reasons, you can easily remove it from your board.
To delete a column, follow these steps:
Go to the board you would like to edit.
Click the cogwheel ⚙️ on the upper right corner to open the Board settings.
Find the column you want to delete and click on Delete Column at the bottom of it.
Choose from the drop down menu, which column you want to delete.
Choose which column you want to move the existing tickets to from the one that you wish to delete.Click on "Delete" to finish the process.