Remove saturated fat key from required elements

We're setting this to 0 anyway if it's not available

Author: rolandgeider

wger/nutrition/off.py

@@ -26,7 +26,6 @@
 from wger.utils.constants import ODBL_LICENSE_ID
 from wger.utils.models import AbstractSubmissionModel
 
-
 OFF_REQUIRED_TOP_LEVEL = [
     'product_name',
     'code',
@@ -36,7 +35,6 @@
     'proteins_100g',
     'carbohydrates_100g',
     'fat_100g',
-    'saturated-fat_100g',
 ]