finish removing support for Python 2.6 and 3.3 (#5021)

.travis.yml

@@ -125,9 +125,6 @@ matrix:
     - env: MARIONETTE=1 TOXENV=py27-marionette
       <<: *python
       <<: *firefox-nightly
-    - env: TOXENV=py33-unit
-      <<: *python
-      python: 3.3
     - env: TOXENV=flake8
       <<: *python
       python: 3.6

README.md

@@ -129,7 +129,7 @@ Note that all Selenium Java artifacts are **built with Java 8
 
 ### Optional Requirements
 
-* Python 2.6.x to 2.7 (without this, Python tests will be skipped)
+* Python 2.7, Python 3.4+ (without these, Python and Python3 tests will be skipped)
 * Ruby 2.0
 
 ### Internet Explorer Driver

py/docs/source/index.rst

@@ -26,8 +26,7 @@ Several browsers/drivers are supported (Firefox, Chrome, Internet Explorer, Phan
 Supported Python Versions
 =========================
 
-* Python 2.6, 2.7
-* Python 3.3+
+* Python 2.7, 3.4+
 
 Installing
 ==========
@@ -40,7 +39,7 @@ Alternately, you can download the source distribution from `PyPI <http://pypi.py
 
     python setup.py install
 
-Note: both of the methods described above install `selenium` as a system-wide package  That will require administrative/root access to their machine.  You may consider using a `virtualenv <http://www.virtualenv.org/>`_ to create isolated Python environments instead.
+Note: You may want to consider using `virtualenv <http://www.virtualenv.org/>`_ to create isolated Python environments.
 
 Drivers
 =======

py/tox.ini

@@ -1,10 +1,10 @@
 [tox]
-envlist = py{27,33,34,35,36}-{unit,chrome,edge,firefox,ie,phantomjs,remote,safari}, docs, flake8
+envlist = py{27,34,35,36}-{unit,chrome,edge,firefox,ie,phantomjs,remote,safari}, docs, flake8
 
 [testenv]
 passenv = DISPLAY PYTEST_ADDOPTS CI TRAVIS
 commands =
-  py{27,33,34,35,36}-unit: py.test -n=auto {posargs:test/unit}
+  py{27,34,35,36}-unit: py.test -n=auto {posargs:test/unit}
   py{27,36}-chrome: py.test --driver=Chrome {posargs}
   py{27,36}-edge: py.test --driver=Edge {posargs}
   py{27,36}-firefox: py.test --driver=Firefox {posargs}