🐛 Fix error when sending user feedback form (#10419)

If the smtp-default-from is something like "Penpot
<no-reply@penpot.app>", the schema validation fails because
it expects a simple email without < >

backend/src/app/rpc/commands/feedback.clj

@@ -54,7 +54,6 @@
 
     (eml/send! {::eml/conn pool
                 ::eml/factory eml/user-feedback
-                :from     (cf/get :smtp-default-from)
                 :to       destination
                 :reply-to (:email profile)
                 :email    (:email profile)