Add test coverage for os.removedirs (#16775)

diff --cc Lib/test/test_os.py
index cc9bd4e8e2cb7124d2dd88863f49b5024a133cd0,ec7b3efb06b681ddae574469231efccc98ca4118..d479461b7e0427d6eacfc3d00d32fbe9cbaa12ec
--- 1/Lib/test/test_os.py
--- 2/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@@ -2175,7 -2123,7 +2220,8 @@@ def test_main()
          ExtendedAttributeTests,
          Win32DeprecatedBytesAPI,
          TermsizeTests,
 +        OSErrorTests,
+         RemoveDirsTests,
      )
  
  if __name__ == "__main__":