Remove trailing whitespace from xeditable.py.

Cleaning up the trailing whitespace in `xeditable.py` improves code readability and adheres to coding standards. No functional changes have been made.

datatableview/views/xeditable.py

@@ -174,14 +174,14 @@ def _get_foreignkey_choices(self, field, field_name):
             # will consequently try to assume initial=None, forcing the blank option to appear.
             formfield_kwargs["empty_label"] = None
         formfield = field.formfield(**formfield_kwargs)
-        
+
         # In case of using Foreignkey limit_choices_to, django prepares model form and handles
         # form validation correctly, so does django-datatableview with x-editable plugin. However
         # this piece of code helps filtering limited choices to be only visible choices,else
         # all the choices are visible.
         if formfield.limit_choices_to:
             formfield.queryset = formfield.queryset.filter(**formfield.limit_choices_to)
-        
+
         # return formfield.choices
         # formfield choices deconstructed to get ModelChoiceIteratorValue correctly (>= Django 3.1)
         # https://docs.djangoproject.com/en/3.2/ref/forms/fields/#django.forms.ModelChoiceIteratorValue.value