Deleting or Archiving a customer record can be achieved by clicking into the customers account and scrolling to the bottom of the page. Once at the bottom simply click on the [Archive Customer] button - then confirm your change.
Archived customers will no longer appear in search results.
To find customers that have been archived when searching for a customer from the customers page make sure to toggle then Show Archived Customers setting.
A customer account can be archived by clicking into their account and clicking the [Un-Archive Customer] button.