removed some leftover 3.2 stuff that was missed

[skip ci]

setup.py

@@ -22,23 +22,12 @@ with open('README.rst') as readme:
 
 
 _requires = [
-    'cryptography>=0.8',
+    'cryptography>=1.1',
     'pyasn1',
-    'six',
+    'six>=1.7.2',
     'singledispatch',
 ]
 
-if sys.version_info[:2] == (3, 2):
-    # cryptography dropped support for Python 3.2 in 0.9
-    # I still need to support Python 3.2 for the time being, and it's still feasible to do so currently,
-    # so just ensure we install 0.8.x on 3.2
-    _requires[0] = 'cryptography>=0.8,<0.9'
-
-    # there is also a problem with the combination of cryptography 0.8.2 and cffi 1.1.1 and 1.1.2
-    # where the double-free in the dsa verify function fixed in cryptography 0.9.1 causes a segfault
-    # so add the requirement for cffi <= 1.1.0 in here as well
-    _requires += ['cffi<=1.1.0']
-
 if sys.version_info[:2] <= (3, 4):
     # only depend on enum34 if Python is older than 3.4
     _requires += ['enum34']