disable the 'atexit' pyregr test: it calls the registered atexit handlers...

disable the 'atexit' pyregr test: it calls the registered atexit handlers which triggers the module cleanup and crashes

tests/bugs.txt

@@ -39,6 +39,9 @@ pyregr.test_gdb
 pyregr.test_support
 pyregr.test_peepholer
 
+# the atexit test runs the registered atexit functions => module cleanup => crash
+pyregr.test_atexit
+
 # CPython regression tests that take too long
 pyregr.test_subprocess
 pyregr.test_zipfile64