remove call to profile.get_name from DectRegistration.__str__ method

Author: tykling

src/phonebook/models.py

@@ -96,7 +96,7 @@ def save(self, *args, **kwargs) -> None:
         super().save(*args, **kwargs)
 
     def __str__(self) -> str:
-        return f"{self.number or self.letters} ({self.user.profile.get_name})"
+        return f"{self.number or self.letters}"
 
     def check_unique_ipei(self) -> None:
         """Check IPEI is unique."""