In
the Trap Presets panel, select the preset(s), and then do one of
the following:
Click the Delete button.
Choose Delete Presets in the panel menu.
If prompted to replace a trap preset, choose one in the
Delete Trap Preset dialog box that appears. This dialog box appears
if at least one of the selected presets has been assigned to a page.
Click OK to confirm the deletion.
Note: You cannot delete either of the two
built‑in presets: [Default] and [No Trap Preset].