Fix flake 8 issues

Author: CRiddler

nibabel/filebasedimages.py

@@ -12,7 +12,7 @@
 from copy import deepcopy
 from .fileholders import FileHolder
 from .filename_parser import (types_filenames, TypesFilenamesError,
-                              splitext_addext, _stringify_path)
+                              splitext_addext)
 from .openers import ImageOpener
 from .deprecated import deprecate_with_version
 

nibabel/filename_parser.py

@@ -26,12 +26,12 @@ def _stringify_path(filepath_or_buffer):
     Returns
     -------
     str_filepath_or_buffer : str
-    
+
     Notes
     -----
     Objects supporting the fspath protocol (python 3.6+) are coerced
     according to its __fspath__ method.
-    For backwards compatibility with older pythons, pathlib.Path objects 
+    For backwards compatibility with older pythons, pathlib.Path objects
     are specially coerced.
     Any other object is passed through unchanged, which includes bytes,
     strings, buffers, or anything else that's not even path-like.