Remove unused fields for depicts.

depicts/model.py

@@ -26,9 +26,7 @@ class DepictsItem(Base):
     item_id = Column(Integer, primary_key=True, autoincrement=False)
     label = Column(String)
     description = Column(String)
-    commons = Column(String)
     count = Column(Integer)
-    entity = Column(postgresql.JSON)
     qid = column_property('Q' + cast(item_id, String))
     db_alt_labels = relationship('DepictsItemAltLabel',
                                  collection_class=set,
@@ -96,7 +94,6 @@ class Item(Base):
                 for v in values
                 if 'datavalue' in v['mainsnak']]
 
-
     @property
     def date(self):
         v = wikibase.first_datavalue(self.entity, 'P571')