skip test_jit_legacy (pytorch#68129)

Summary:
disables failing tests in [https://github.com/pytorch/pytorch/issues/66429](https://github.com/pytorch/pytorch/issues/67646)

Pull Request resolved: pytorch#68129

Reviewed By: suo, janeyx99

Differential Revision: D32326118

Pulled By: Krovatkin

fbshipit-source-id: ca00d2214503f418be45dc756057b990fb6e6370

Author: Krovatkin

test/test_jit_fuser.py

@@ -8,6 +8,7 @@
 import torch.nn as nn
 import torch.nn.functional as F
 from torch.testing import FileCheck
+from unittest import skipIf
 
 from torch.testing._internal.common_utils import run_tests, IS_SANDCASTLE, ProfilingMode, GRAPH_EXECUTOR, \
     enable_profiling_mode_for_profiling_tests, IS_WINDOWS, TemporaryDirectoryName, shell
@@ -38,6 +39,7 @@ def warmup_forward(f, *args):
     return results
 
 
+@skipIf(GRAPH_EXECUTOR == ProfilingMode.LEGACY, "skip due to SIGIOT failures, #67646")
 class TestFuser(JitTestCase):
     def assertAllFused(self, graph, except_for=()):