Subsets can be deleted from the design using a variety of methods. Once deleted, a subset is permanently removed from the model.
How To Delete Subsets
1
Begin by highlighting one or more subsets in the Explorer Tree.
2
Choose "Delete..." from the Edit menu.
Alternative 1: Right-click on any of the highlighted subsets and select "Delete".
Alternative 2: Choose "Delete..." from the Subsets submenu within the Design menu.
Alternative 3: All subsets can be removed from the design by selecting "Delete All.." from the Subsets submenu within the Design menu (this operation can be invoked with nothing selected).