Write an article based on this "Click on the Firefox menu button located at the top right corner of your Firefox session. Click on “Add-ons. Click on “Extensions” in the left pane of the Add-ons Manager. Click on “Disable” next to the toolbar you want hidden in Firefox. Select the option to restart Firefox."

Article:
” The Firefox Add-ons Manager will open in a new browser tab.   Firefox will close and reopen, and the toolbar you disabled will now be hidden.