GH14833

Removed accidently added Substitution import

Author: ShaharBental

pandas/indexes/multi.py

@@ -32,8 +32,7 @@
 from pandas.core.base import FrozenList
 import pandas.core.base as base
 from pandas.util.decorators import (Appender, cache_readonly,
-                                    deprecate, deprecate_kwarg,
-                                    Substitution)
+                                    deprecate, deprecate_kwarg)
 
 import pandas.core.common as com
 import pandas.core.missing as missing