To delete specific text in a table cell, select the text (not just the cell), and press the Delete key.
Caution
You must select the actual text or cell—not just place the cursor in the cell—in order to delete the text.
To delete an entire table, choose Table, Select Table from the Tables and Borders toolbar and then press the Delete key. The table disappears and is replaced by the initial "Double-click to Add a Table" directive that displays when you first create a table slide.