Remove dropped use-cases from tests

tests.py

@@ -86,23 +86,6 @@ def test_stop():
         assert not exists(path)
 
 
-def test_eof_stop():
-    pipe_io = build_pipe_io_server()
-    def open_close_in_pipe():
-        open(pipe_io.in_pipe, 'wb').close()
-    raise_if_thread_blocks(pipe_io.run, open_close_in_pipe)
-
-
-def test_out_pipe_closed_stop():
-    pipe_io = build_pipe_io_server()
-    def close_out_pipe_and_write():
-        in_pipe = open(pipe_io.in_pipe, 'wb')
-        open(pipe_io.out_pipe, 'rb').close()
-        in_pipe.write(b'lel\n')
-        in_pipe.flush()
-    raise_if_thread_blocks(pipe_io.run, close_out_pipe_and_write)
-
-
 @pytest.mark.parametrize(
     'test_data', [
         'Cats and cheese',