Remove OrderedDict implementation as RowProxy is returned

http://docs.sqlalchemy.org/en/rel_0_9/core/connections.html?highlight=rowproxy#sqlalchemy.engine.RowProxy

dataset/persistence/table.py

@@ -1,9 +1,5 @@
 import logging
 from itertools import count
-try:
-    from collections import OrderedDict
-except ImportError:
-    from ordereddict import OrderedDict  # Python < 2.7 drop-in
 
 from sqlalchemy.sql import and_, expression
 from sqlalchemy.schema import Column, Index
@@ -288,7 +284,7 @@ class Table(object):
         rp = self.database.executable.execute(query)
         data = rp.fetchone()
         if data is not None:
-            return OrderedDict(zip(rp.keys(), data))
+            return data
 
     def _args_to_order_by(self, order_by):
         if order_by[0] == '-':

dataset/persistence/util.py

@@ -1,9 +1,5 @@
 from datetime import datetime, timedelta
 from inspect import isgenerator
-try:
-    from collections import OrderedDict
-except ImportError:
-    from ordereddict import OrderedDict  # Python < 2.7 drop-in
 
 from sqlalchemy import Integer, UnicodeText, Float, DateTime, Boolean, types, Table, event
 
@@ -50,7 +46,7 @@ class ResultIter(object):
             else:
                 # stop here
                 raise StopIteration
-        return OrderedDict(zip(self.keys, row))
+        return row
 
     next = __next__