Remove unnecessary absolute_import

Now that I am using from six.moves import http_client, there is no longer a problem importing http

Author: yonran

remoteobjects/http.py

@@ -27,7 +27,6 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-from __future__ import absolute_import
 import simplejson as json
 from remoteobjects.json import ForgivingDecoder