remove obsolete __future__ import absolute_import

patch by Brad Schoening; reviewed by Brad Schoening and Bret McGuire
reference: #1263

Author: bschoening

cassandra/cluster.py

@@ -18,7 +18,6 @@
 This module houses the main classes you will interact with,
 :class:`.Cluster` and :class:`.Session`.
 """
-from __future__ import absolute_import
 
 import atexit
 from binascii import hexlify

cassandra/connection.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import  # to enable import io from stdlib
 from collections import defaultdict, deque
 import errno
 from functools import wraps, partial, total_ordering

cassandra/cqltypes.py

@@ -29,7 +29,6 @@
 # for example), these classes would be a good place to tack on
 # .from_cql_literal() and .as_cql_literal() classmethods (or whatever).
 
-from __future__ import absolute_import  # to enable import io from stdlib
 import ast
 from binascii import unhexlify
 import calendar

cassandra/protocol.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import  # to enable import io from stdlib
 from collections import namedtuple
 import logging
 import socket

tests/integration/cqlengine/query/test_queryset.py

@@ -13,7 +13,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from __future__ import absolute_import
 
 import unittest