Disable test_del_shutdown in test_concurrent_futures.py

Author: fangerer

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_concurrent_futures.txt

@@ -66,7 +66,6 @@
 *test.test_concurrent_futures.test_shutdown.ProcessPoolForkProcessPoolShutdownTest.test_run_after_shutdown
 *test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_cancel_futures
 *test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_context_manager_shutdown
-*test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_del_shutdown
 *test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_hang_gh83386
 *test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_hang_gh94440
 *test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_hang_issue12364

mx.graalpython/mx_graalpython.py

@@ -708,6 +708,7 @@ def update_unittest_tags(args):
         'test.test_concurrent_futures.test_thread_pool.ThreadPoolExecutorTest.test_idle_thread_reuse',
         # Transiently times out GR-52666
         'test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_submit_after_interpreter_shutdown',
+        'test.test_concurrent_futures.test_shutdown.ProcessPoolSpawnProcessPoolShutdownTest.test_del_shutdown',
         # Transient lists differ error GR-49936
         'graalpython.lib-python.3.test.test_buffer.TestBufferProtocol.test_ndarray_index_getitem_multidim',
         'graalpython.lib-python.3.test.test_buffer.TestBufferProtocol.test_ndarray_slice_redundant_suboffsets',