ModeratorThose are copies of the previous versions of 1Password installed. Sometimes you'll see additional zip files from a subsequent install, not always but sometimes. Provided all of your data is available in 1Password 8 then yes you can remove those files by placing them in the bin.
The installer is setup so you'll always get the latest version of 1Password. It is also responsible for zipping up the previous version. As time goes on additional activities may be added to the installer if needed or possibly removed if needed.
