STY: Further simplification

Co-authored-by: Chris Markiewicz <[email protected]>

Author: DimitriPapadopoulos

nipype/pipeline/engine/utils.py

@@ -1483,7 +1483,7 @@ def clean_working_directory(
     if str2bool(config["execution"]["remove_unnecessary_outputs"]):
         for f in walk_files(cwd):
             if f not in needed_files:
-                if not needed_dirs:
+                if not f.startswith(tuple(needed_dirs)):
                     files2remove.append(f)
                 elif not any(f.startswith(dname) for dname in needed_dirs):
                     files2remove.append(f)