Code cleanup for @effigies code review.

Author: Ben Cipollini

nibabel/gifti/gifti.py

@@ -389,7 +389,6 @@ def metadata(self):
 class GiftiImage(FileBasedImage, xml.XmlSerializable):
     valid_exts = ('.gii',)
     files_types = (('image', '.gii'),)
-    valid_exts = ('.gii',)
 
     def __init__(self, header=None, extra=None, file_map=None, meta=None,
                  labeltable=None, darrays=None, version="1.0"):

nibabel/gifti/giftiio.py

@@ -10,14 +10,9 @@
 # Stephan Gerhard, Oktober 2010
 ##############
 
-import warnings
-
 import numpy as np
 
 
-warnings.warn('Please use nibabel.load/save.', DeprecationWarning)
-
-
 @np.deprecate_with_doc("Use nibabel.load() instead.")
 def read(filename):
     """ Load a Gifti image from a file
@@ -84,4 +79,3 @@ def write(image, filename):
     """
     from ..loadsave import save
     return save(image, filename)
-