remove allow-untyped-defs from torch/jit/_passes/_property_propagation.py (pytorch#144132)

Pull Request resolved: pytorch#144132
Approved by: https://github.com/Skylion007

Author: bobrenjc93

torch/jit/_passes/_property_propagation.py

@@ -1,4 +1,3 @@
-# mypy: allow-untyped-defs
 """
 Tools to help with tensor property propagation.
 
@@ -13,7 +12,7 @@
 from torch._C import Graph
 
 
-def apply_input_props_using_example(graph: Graph, example_input: List[Any]):
+def apply_input_props_using_example(graph: Graph, example_input: List[Any]) -> None:
     """
     Applies properties for each tensor in the graph inputs
     using the example supplied.