Update unit testing (#262)

- Remove 'unit' field check
- Ref: inventree/InvenTree#9150

Author: SchrodingersGat

test/test_company.py

@@ -51,7 +51,6 @@ def test_fields(self):
         field_names = company.Company.fieldNames(self.api)
 
         for field in [
-            'url',
             'name',
             'image',
             'is_customer',