Open a building. For more information on how to do so, see section 4.6.1., 5.4.3. or 6.1.1.
Go to the building card (see image below).
Click the tab called "General" (see image below).
Place your cursor on the image you wish to remove (see the first image below). When you place your cursor on an image you will see two icons: "Get image" and "Delete image" (see the second image below).
Click "Delete image" (see the first image below). When you do so, a dialog asking the following question will open: "Are you sure you want to delete the image?" (see the second image below).
Click "Delete" in the dialog (see the first image below). When you do so, the image you are working with will be removed from the building card (see the second image below).
