Revert "Merge pull request dipy#346 from omarocegueda/syn_registration"

This reverts commit e63c178, reversing
changes made to c273fe5.

We decided to back off these commits until we had checked the code
coverage of the Cython modules, or timed out doing that.

Discussion here:

dipy#34

dipy/align/__init__.py

@@ -1,24 +1,3 @@
-import numpy as np
-floating  = np.float32
 
-class Bunch(object):
-    def __init__(self, **kwds):
-        r"""A 'bunch' of values (a replacement of Enum)
-        
-        This is a temporary replacement of Enum, which is not available
-        on all versions of Python 2
-        """
-        self.__dict__.update(kwds)
-
-VerbosityLevels = Bunch(NONE=0, STATUS=1, DIAGNOSE=2, DEBUG=3)
-r""" VerbosityLevels
-This enum defines the four levels of verbosity we use in the align
-module.
-NONE : do not print anything
-STATUS : print information about the current status of the algorithm
-DIAGNOSE : print high level information of the components involved in the
-registration that can be used to detect a failing component.
-DEBUG : print as much information as possible to isolate the cause of a bug.
-"""