Remove py-bcrypt as dependency for 'auth' feature

need to add bcrypt instead, but must wait to avoid breaking things

setup.py

@@ -139,6 +139,7 @@ extras = {
     }
 
 
+# TODO: pretty sure some/all of this should be merged with above
 if sys.platform == 'win32':
     extras['auth'] = [
         #
@@ -152,8 +153,7 @@ else:
         # package                       # low                   high
 
         'passlib',                      # 1.7.1
-        'py-bcrypt',                    # 0.2
-        ]
+    ]
 
 
 setup(