Assume sympy is always installed (#94903)

Signed-off-by: Edward Z. Yang <[email protected]>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94903
Approved by: https://github.com/Skylion007, https://github.com/malfet
diff --git a/test/test_proxy_tensor.py b/test/test_proxy_tensor.py
index 743e09b..e6be94a 100644
--- a/test/test_proxy_tensor.py
+++ b/test/test_proxy_tensor.py
@@ -1,6 +1,6 @@
 # Owner(s): ["module: ProxyTensor"]
 
-from torch.testing._internal.common_utils import TestCase, run_tests, IS_WINDOWS, xfail_inherited_tests
+from torch.testing._internal.common_utils import TestCase, run_tests, xfail_inherited_tests
 import torch
 import unittest
 import warnings
@@ -27,13 +27,6 @@
 
 aten = torch.ops.aten
 
-try:
-    import sympy  # noqa: F401
-    # TODO(jansel): these tests fail on windows
-    HAS_SYMPY = not IS_WINDOWS
-except ImportError:
-    HAS_SYMPY = False
-skipIfNoSympy = unittest.skipIf(not HAS_SYMPY, "no sympy")
 HAS_CUDA = torch.cuda.is_available()
 
 
@@ -735,7 +728,6 @@
     tracing_mode = "fake"
 
 
-@skipIfNoSympy
 @xfail_inherited_tests([
     "test_make_fx_overloads",
     "test_trace_subclasses",
@@ -812,7 +804,6 @@
     return make_fx(f, tracing_mode="symbolic")(*inps)
 
 # TODO: Need to test the guards themselves specifically as well
-@skipIfNoSympy
 class TestSymbolicTracing(TestCase):
     def _test_dynamic(self, fn, trace_inputs, test_inputs, assert_eq=True):
         """
@@ -1489,14 +1480,12 @@
     def test_make_fx_fake_exhaustive(self, device, dtype, op):
         _test_make_fx_helper(self, device, dtype, op, "fake")
 
-    @skipIfNoSympy
     @ops(op_db, allowed_dtypes=(torch.float,))
     @skipOps('TestProxyTensorOpInfo', 'test_make_fx_symbolic_exhaustive',
              make_fx_failures | fake_tensor_failures | symbolic_tensor_failures | outplace_symbolic_tensor_failures)
     def test_make_fx_symbolic_exhaustive(self, device, dtype, op):
         _test_make_fx_helper(self, device, dtype, op, "symbolic")
 
-    @skipIfNoSympy
     @ops(op_db, allowed_dtypes=(torch.float,))
     @skipOps('TestProxyTensorOpInfo', 'test_make_fx_symbolic_exhaustive_inplace',
              make_fx_failures | fake_tensor_failures | symbolic_tensor_failures | inplace_symbolic_tensor_failures)