Removed unused imports.

src/api/model/entries.py

@@ -7,8 +7,6 @@ from sqlalchemy import func, desc
 from sqlalchemy.orm import column_property
 from sqlalchemy.sql import func, select
 
-from collections import OrderedDict
-
 class Entry(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     value_date = db.Column(db.Date, nullable = False)