19.7 Deleting Constraints
To delete an individual constraint, simply select the constraint either within the design layout or the Attributes tool window so that it highlights (in Figure 19-12, for example, the right-most constraint has been selected) and tap the keyboard delete key. The constraint will then be removed from the layout.
Figure 19-12
Another option is to hover the mouse pointer over the constraint anchor while holding down the Ctrl (Cmd on macOS) key and clicking on the anchor after it turns red:
Figure 19-13
Alternatively, remove all of the constraints on a widget by right-clicking on it selecting the Clear Constraints of Selection menu option.
To remove all of the constraints from every widget in a layout, use the toolbar button highlighted in Figure 19-14:
Figure 19-14