Do not change smartypants.educateDashes* with a custom implementation.

When using the new_dashes function, smartypants does not replace two
dashes (--) with an en dash and three dashes (---) with an em
dash. Without these modifications, smartypants DOES replace the dashes
as expected.

Using smartypants 1.6.0.3 from PyPI.

acrylamid/filters/typography.py

@@ -30,9 +30,6 @@ class Typography(Filter):
 
     def init(self, conf, env):
 
-        smartypants.educateDashes = new_dashes
-        smartypants.educateDashesOldSchool = new_dashes
-
         self.ignore = env.options.ignore
         self.filters = {'amp': amp, 'widont': widont, 'caps': caps,
                         'initial_quotes': initial_quotes, 'number_suffix': number_suffix,
@@ -54,13 +51,6 @@ def transform(self, content, entry, *args):
         return content
 
 
-def new_dashes(str):
-    # patching something-- to return something-- not something&#8212.
-    str = re.sub(r"""(\s)--""", r"""\1–""", str)   # en (yes, backwards)
-    str = re.sub(r"""(\s)---""", r"""\1—""", str)  # em (yes, backwards)
-    return str
-
-
 def amp(text, autoescape=None):
     """Wraps apersands in HTML with ``<span class="amp">`` so they can be
     styled with CSS. Apersands are also normalized to ``&amp;``. Requires