You can delete manually created names. You cannot delete table names.
To delete a name, follow these steps:
1.Open the Name manager in one of the following ways:
•On the Sidebar, click
Name manager.
•In the range field, click the
button and run the Manage defined names command.
2.In the Name manager, hover the cursor over the desired name and click
Expand.
3.Click
Delete.

4.Click Delete in the window that appears to confirm the deletion.