I'm assuming you've already made the chart.
Right click on the chart area.
Select Chart Options
Tab next to Data Labels is Data Table.
Click on Data Table.
Click on "Show Data Table"
Click on Legend Tab
Remove check for Show Legend
In a perfect world, this should display the data table but not the legend.
Personally, I think this is visually more confusing than the legend.
But what do I know? ;-)