remove cast

Author: Rohan Jain

pandas/core/arrays/arrow/array.py

@@ -152,9 +152,6 @@ def floordiv_compat(
                 pc.subtract(divided, pa.scalar(1, type=divided.type)),
                 divided,
             )
-            # Ensure compatibility with older versions of pandas where
-            # int8 // int64 returned int8 rather than int64.
-            result = result.cast(left.type)
         else:
             # Use divide instead of divide_checked to match numpy
             # floordiv where divide by 0 returns infinity for floating