Fix nightly large_vector test caused by incorrect with_seed path (apa…

…che#18178)

tests/nightly/test_large_array.py

@@ -27,9 +27,8 @@
 
 from mxnet.test_utils import rand_ndarray, assert_almost_equal, rand_coord_2d, default_context, check_symbolic_forward, create_2d_tensor, get_identity_mat, get_identity_mat_batch
 from mxnet import gluon, nd
-from common import with_seed, with_post_test_cleanup, assertRaises
+from common import with_seed, assertRaises
 from mxnet.base import MXNetError
-from nose.tools import with_setup
 import unittest
 
 # dimension constants

tests/nightly/test_large_vector.py

@@ -27,9 +27,8 @@
 
 from mxnet.test_utils import rand_ndarray, assert_almost_equal, rand_coord_2d, create_vector
 from mxnet import gluon, nd
-from tests.python.unittest.common import with_seed, assertRaises
+from common import with_seed, assertRaises
 from mxnet.base import MXNetError
-from nose.tools import with_setup
 import unittest
 
 # dimension constants

tests/python/unittest/common.py

@@ -314,42 +314,6 @@ def teardown():
     """
     mx.nd.waitall()
 
-
-def with_post_test_cleanup():
-    """
-    Helper function that cleans up memory by releasing it from memory pool
-    Required especially by large tensor tests that have memory footprints in GBs.
-    """
-    def test_helper(orig_test):
-        @make_decorator(orig_test)
-        def test_new(*args, **kwargs):
-            logger = default_logger()
-            try:
-                orig_test(*args, **kwargs)
-            except:
-                logger.info(test_msg)
-                raise
-            finally:
-                mx.nd.waitall()
-                mx.cpu().empty_cache()
-
-
-def with_environment(*args_):
-    """
-    Helper function that takes a dictionary of environment variables and their
-    desired settings and changes the environment in advance of running the
-    decorated code.  The original environment state is reinstated afterwards,
-    even if exceptions are raised.
-    """
-    def test_helper(orig_test):
-        @functools.wraps(orig_test)
-        def test_new(*args, **kwargs):
-            with environment(*args_):
-                orig_test(*args, **kwargs)
-        return test_new
-    return test_helper
-
-
 def run_in_spawned_process(func, env, *args):
     """
     Helper function to run a test in its own process.