CLN: remove impossible "Index is None" case

Author: toobaz

pandas/core/series.py

@@ -3239,9 +3239,6 @@ def _try_cast(arr, take_fast_path):
         subarr = _try_cast(data, False)
 
     if subarr.ndim == 0 or is_scalar(data):
-        if index is None:
-            return subarr.item()
-
         if subarr.ndim == 1:
             # a scalar upcasted to 1-dimensional by maybe_cast_to_datetime()
             value = subarr[0]