Note: Once you delete a map, there's no way to recover it.
To delete your PamPam map from the map itself:
Go to the map you want to delete
Click into the "Edit" mode by clicking the toggle in the top right of the panel
Click into the three-dot menu to the left of the Edit toggle
Click "Delete map"
To delete your PamPam map from your profile:
Go to your profile
Click into the "Edit" mode by clicking the toggle in the top right of the panel
Click into the dot menu on the right side of the map tile
Click "Delete"