If you don't use products, or don't want them to be surfaced via Weflow, then you can disable them here.
These settings do not impact the use of products in your Salesforce CRM. They only impact the display of products in Weflow itself.
Enabling or Disabling Opportunity Products
Turn Salesforce Products on or off in Weflow from the Admin Console. The setting changes only what Weflow displays, never your Salesforce configuration.