Remove legacy tests

Summary: If any of those ops need to be added back in the PT2 flow, we can write new tests using graph builder.

Reviewed By: hsharma35

Differential Revision: D78417828

Author: mcremon-meta

backends/cadence/aot/tests/test_fusion_ops_passes.py

@@ -178,43 +178,6 @@ def test_keep_mm_add_with_multiple_users(self) -> None:
         self.assertEqual(count_node(converted_graph, exir_ops.edge.aten.mm.default), 1)
         self.assertEqual(count_node(converted_graph, exir_ops.edge.aten.add.Tensor), 3)
 
-    # TODO(matthiascremon) -> None: enable that pass with new flow
-    @torch.no_grad()
-    @unittest.expectedFailure
-    def test_legacy_conv_bn_fusion(self) -> None:
-        class ModelConvBN(torch.nn.Module):
-            def __init__(
-                self, in_features: int, out_features: int, kernel_size: int
-            ) -> None:
-                super().__init__()
-                self.conv1d = nn.Conv1d(in_features, out_features, kernel_size)
-                self.bn = nn.BatchNorm1d(out_features)
-
-            def forward(self, x: torch.Tensor) -> torch.Tensor:
-                y = self.conv1d(x)
-                return self.bn(y)
-
-        model = ModelConvBN(64, 1, 2)
-        x = torch.randn(1, 64, 4)
-
-        graph_module = (
-            compiler.export_to_executorch_gen_etrecord(model.eval(), (x,))
-            .exported_program()
-            .graph_module
-        )
-        # Assert that after running the fusion passes, batchnorm was fused with conv1d
-        self.assertEqual(
-            count_node(graph_module, torch.ops.aten.linear.out)
-            + count_node(graph_module, torch.ops.cadence.convolution.out),
-            1,
-        )
-        self.assertEqual(
-            count_node(
-                graph_module, torch.ops.aten._native_batch_norm_legit_no_training.out
-            ),
-            0,
-        )
-
     def test_permute_transpose_fusion(self) -> None:
         builder = GraphBuilder()
         x = builder.placeholder("x", torch.randn(3, 1, 3, 1, 4, dtype=torch.float32))