Remove unused storage method

pkg/deesee/storage/storage.go

@@ -44,13 +44,3 @@ func (s *DeeSee) Store(hero *deesee.Superhero) (err error) {
 	*s = append(*s, hero)
 	return
 }
-
-// FindByName from superheros list
-func (s *DeeSee) FindByName(name string) *deesee.Superhero {
-	for _, hero := range *s {
-		if strings.EqualFold(name, hero.Name) {
-			return hero
-		}
-	}
-	return nil
-}