Fix flake8-return warning

RET507 Unnecessary `elif` after `continue` statement

setuptools/command/bdist_egg.py

@@ -337,7 +337,7 @@ def analyze_egg(egg_dir, stubs):
         for name in files:
             if name.endswith('.py') or name.endswith('.pyw'):
                 continue
-            elif name.endswith('.pyc') or name.endswith('.pyo'):
+            if name.endswith('.pyc') or name.endswith('.pyo'):
                 # always scan, even if we already know we're not safe
                 safe = scan_module(egg_dir, base, name, stubs) and safe
     return safe