[completeness] Fix error in completeness callable

Fix #63 (closed)

src/mednet/engine/saliency/completeness.py

@@ -300,7 +300,6 @@ def run(
     else:
         raise TypeError(f"Model of type `{type(model)}` is not yet supported.")
 
-    use_cuda = device_manager.device_type == "cuda"
     if device_manager.device_type in ("cuda", "mps") and (
         parallel == 0 or parallel > 1
     ):