Removed db stuffs

src/schemas.py

@@ -26,13 +26,3 @@ class SampleSchema(ma.Schema):
 
     date = fields.DateTime(required=True)
     device_id = fields.Integer(required=True)
-
-
-class SampleMetadataSchema(ma.SQLAlchemyAutoSchema):
-    """
-    Marshmallow schema generated
-    """
-    class Meta:
-        model = SampleMetadata
-        exclude = ('timestamp', 'id', 'device_date')
-    date = auto_field("device_date", dump_only=False)