Fix for broken CSV tests

Author: Chris Bertinato

pandas/io/parsers.py

@@ -3127,11 +3127,10 @@ def converter(*date_cols):
                 return tools.to_datetime(
                     ensure_object(strs),
                     utc=None,
-                    box=False,
                     dayfirst=dayfirst,
                     errors='ignore',
                     infer_datetime_format=infer_datetime_format
-                )
+                ).to_numpy()
             except ValueError:
                 return tools.to_datetime(
                     parsing.try_parse_dates(strs, dayfirst=dayfirst))