REQUIRES in cfg instead

Author: rolfmorel

examples/ingress/torch/lit.local.cfg

@@ -1 +1,4 @@
 config.excludes = ["MLPModel"]
+
+if "torch" not in config.available_features:
+  config.unsupported = True

examples/ingress/torch/mlp_from_file.py

@@ -1,5 +1,4 @@
 # RUN: python %s
-# REQUIRES: torch
 
 """
 Example demonstrating how to load a PyTorch model to MLIR using Lighthouse

examples/ingress/torch/mlp_from_model.py

@@ -1,5 +1,4 @@
 # RUN: python %s
-# REQUIRES: torch
 
 """
 Example demonstrating how to load an already initialized PyTorch model

lighthouse/utils/runtime/ffi.py

@@ -34,4 +34,3 @@ def memrefs_to_packed_args(memref_descs) -> list[ctypes.c_void_p]:
     """
     ctype_args = [memref_to_ctype(memref) for memref in memref_descs]
     return get_packed_arg(ctype_args)
-