Make tests run faster by removing an extreme case

pipe_io_server/test_pipe_io_server.py

@@ -157,7 +157,6 @@ def test_io_random(io_pipes):
         4*1024*1024,
         8*1024*1024,
         16*1024*1024,
-        32*1024*1024
     ]
 )
 def test_io_large_data(io_pipes, test_data_size):