Disable “DO THE FIVE: Help stop coronavirus” tip, called promo on the bottom in Chrome or Chromium in the new page tab

1. go to chrome://flags/#ntp-dismiss-promos
2. optional: find Dismiss promos on the New Tab Page manually
3. set it to Enabled
4. Restart chrome or chromium

Update 09.Feb.2021: This setting has been removed, so it’s no longer possible to disable promotional messages in Chrome and Chromium. Thanks Google Shitlords! Die in a fire!