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).
Click the field "Address type" (see the first image below). When you do so, a list of addresses linked to the building you are working with will open (see the second image below).
Go to the list of addresses.
Place your cursor on the address you wish to remove from the building you are working with (see the first image below). When you place your cursor on an address, you will be shown an icon called "Delete address" (see the second image below).
Click "Delete address" (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 address?" (see the second image below).
Click "Delete" in the dialog (see the first image below). When you do so, the address you are working with will be removed from the building you are working with. At the same time, you will be redirected back to the building card (see the second image below).