Remove Python 2.6 classifier

Horizon does not support Python 2.6 anymore starting with Kilo and might
not work correctly with it, so remove the classifier.

Change-Id: Idb2a044968bf35c1fbe4ab42188c6f7df096d442

doc/source/topics/install.rst

@@ -9,7 +9,7 @@ This page covers the basic installation of Horizon.
 System Requirements
 ===================
 
-* Python 2.7 (or 2.6)
+* Python 2.7
 * Django 1.6 (1.4 and 1.5 are supported too)
 * Minimum required set of running OpenStack services are:
 

setup.cfg

@@ -20,7 +20,6 @@ classifier =
     Programming Language :: Python
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
-    Programming Language :: Python :: 2.6
     Topic :: Internet :: WWW/HTTP
 
 [global]

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,py27dj14,py27dj15,pep8,py33,py34
+envlist = py27,py27dj14,py27dj15,pep8,py33,py34
 minversion = 1.6
 skipsdist = True
 
@@ -44,10 +44,6 @@ commands = pip install django>=1.5,<1.6
 basepython = python2.7
 commands = /bin/bash run_tests.sh -N --integration --selenium-headless {posargs}
 
-[testenv:py26integration]
-basepython = python2.6
-commands = /bin/bash run_tests.sh -N --integration --selenium-headless {posargs}
-
 [testenv:jshint]
 commands = nodeenv -p
            npm install jshint -g