Remove obsolete ExplorerChangeForm.

django_lostplaces/lostplaces/forms.py

@@ -35,11 +35,6 @@ class ExplorerCreationForm(UserCreationForm):
         fetched_voucher.delete()
         return True
 
-class ExplorerChangeForm(UserChangeForm):
-    class Meta:
-        model = User
-        fields = ('username', 'email', 'first_name', 'last_name')
-
 class PlaceForm(forms.ModelForm):
     class Meta:
         model = Place