Remove unused variable
Remove unused variable

o heat/common/config.py:DEFAULT_PORT = 8000

  This variable was removed in the following commit.

    commit 34e47b64d926c055d9895c5b3f27949eaca68999
    Author: Steve Baker <sbaker@redhat.com>
    Date:   Mon Jul 22 16:01:44 2013 +1200

        Move heat-cfn, heat-boto, heat-watch to new repo

Change-Id: Iab6213eba1422882c92bd16a3351df19869aa9f3

jasondunsmore/heat,gonzolino/heat,noironetworks/heat,rh-s/heat,rdo-management/heat,NeCTAR-RC/heat,openstack/heat,cwolferh/heat-scratch,cwolferh/heat-scratch,pratikmallya/heat,jasondunsmore/heat,takeshineshiro/heat,dims/heat,maestro-hybrid-cloud/heat,pshchelo/heat,maestro-hybrid-cloud/heat,miguelgrinberg/heat,dragorosson/heat,openstack/heat,dims/heat,cryptickp/heat,noironetworks/heat,dragorosson/heat,redhat-openstack/heat,srznew/heat,steveb/heat,rh-s/heat,rdo-management/heat,takeshineshiro/heat,steveb/heat,gonzolino/heat,miguelgrinberg/heat,redhat-openstack/heat,pshchelo/heat,cryptickp/heat,NeCTAR-RC/heat,srznew/heat,pratikmallya/heat