removed union import from squirrel_ir

Author: juanboschero

opensquirrel/squirrel_ir.py

@@ -4,7 +4,7 @@
 from dataclasses import dataclass
 from functools import wraps
 from math import cos, sin
-from typing import Callable, List, Optional, Tuple, Union
+from typing import Callable, List, Optional, Tuple
 
 import numpy as np