Remove Python 3 guide in HACKING

All files are Python 3 and unicode these days.

Change-Id: If444d9f667666154e36c345cbb1290e0f0feef3f
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

HACKING.rst

@@ -7,6 +7,7 @@ OpenStack Style Commandments
 
 General
 -------
+
 - thou shalt not violate causality in our time cone, or else
 
 Docstrings
@@ -30,8 +31,8 @@ Deviation! When breaking up method calls due to the 79 char line length limit,
 use the alternate 4 space indent.  With the first argument on the succeeding
 line all arguments will then be vertically aligned.  Use the same convention
 used with other data structure literals and terminate the method call with
-the last argument line ending with a comma and the closing paren on its own
-line indented to the starting line level.
+the last argument line ending with a comma and the closing parentheses on its
+own line indented to the starting line level.
 
     unnecessarily_long_function_name(
         'string one',
@@ -40,69 +41,12 @@ line indented to the starting line level.
         kwarg2=['a', 'b', 'c'],
     )
 
-Text encoding
--------------
-
-Note: this section clearly has not been implemented in this project yet, it is
-the intention to do so.
-
-All text within python code should be of type 'unicode'.
-
-    WRONG:
-
-    >>> s = 'foo'
-    >>> s
-    'foo'
-    >>> type(s)
-    <type 'str'>
-
-    RIGHT:
-
-    >>> u = u'foo'
-    >>> u
-    u'foo'
-    >>> type(u)
-    <type 'unicode'>
-
-Transitions between internal unicode and external strings should always
-be immediately and explicitly encoded or decoded.
-
-All external text that is not explicitly encoded (database storage,
-commandline arguments, etc.) should be presumed to be encoded as utf-8.
-
-    WRONG:
-
-    infile = open('testfile', 'r')
-    mystring = infile.readline()
-    myreturnstring = do_some_magic_with(mystring)
-    outfile.write(myreturnstring)
-
-    RIGHT:
-
-    infile = open('testfile', 'r')
-    mystring = infile.readline()
-    mytext = mystring.decode('utf-8')
-    returntext = do_some_magic_with(mytext)
-    returnstring = returntext.encode('utf-8')
-    outfile.write(returnstring)
-
-Python 3.x Compatibility
-------------------------
-
-OpenStackClient strives to be Python 3.3 compatible.  Common guidelines:
-
-* Convert print statements to functions: print statements should be converted
-  to an appropriate log or other output mechanism.
-* Use six where applicable: x.iteritems is converted to six.iteritems(x)
-  for example.
-
 Running Tests
 -------------
 
 Note: Oh boy, are we behind on writing tests.  But they are coming!
 
-The testing system is based on a combination of tox and testr. If you just
-want to run the whole suite, run `tox` and all will be fine. However, if
+The testing system is based on a combination of tox and stestr. If you just
+want to run the whole suite, run ``tox`` and all will be fine. However, if
 you'd like to dig in a bit more, you might want to learn some things about
-testr itself. A basic walkthrough for OpenStack can be found at
-http://wiki.openstack.org/testr
+stestr itself. Use ``stestr --help`` for more information.