Update nibabel/nicom/ascconv.py

Co-authored-by: Mathias Goncalves <goncalves.mathias@gmail.com>

Author: matthew-brett

nibabel/nicom/ascconv.py

@@ -17,7 +17,7 @@ class AscconvParseError(Exception):
     """ Error parsing ascconv file """
 
 
-class Atom(object):
+class Atom:
     """ Object to hold operation, object type and object identifier
 
     An atom represents an element in an expression.  For example::