Now, you've either clicked on the table stats and the pop ups have appeared, in which case you just click on them again to make them go away, or (and this is more likely) you've changed the pop up group to "show on table for everyone". Open the config stats window again, click the Group tab, select the 'Default Popup' group and change it to "Pop up use only".
Then read
How To: HUD Configuration or the HUD guides in the
Documentation.