Attempt to fix unit tests by removing subset of tests on mac runner

tests/test_models.py

@@ -4,6 +4,8 @@ import platform
 import os
 import fnmatch
 
+_IS_MAC = platform.system() == 'Darwin'
+
 try:
     from torchvision.models.feature_extraction import create_feature_extractor, get_graph_node_names, NodePathTracer
     has_fx_feature_extraction = True
@@ -322,6 +324,9 @@ def test_model_forward_features(model_name, batch_size):
         assert not torch.isnan(o).any()
 
 
+if not _IS_MAC:
+    # MACOS test runners are really slow, only running tests below this point if not on a Darwin runner...
+
     def _create_fx_model(model, train=False):
         # This block of code does a bit of juggling to handle any case where there are multiple outputs in train mode
         # So we trace once and look at the graph, and get the indices of the nodes that lead into the original fx output