refactor: Drop redundant output converter.

DATETIMEOFFSET is natively supported by `mssql-python`.

See "microsoft/mssql-python#213"

Author: douglaso-profusion

sqlmesh/core/config/connection.py

@@ -1693,29 +1693,6 @@ def connect_mssql_python(**kwargs: t.Any) -> t.Callable:
 
                 conn = mssql_python.connect(conn_str, autocommit=kwargs.get("autocommit", False))
 
-                # Set up output converters for MSSQL-specific data types
-                # Handle SQL type -155 (DATETIMEOFFSET) which is not yet supported by pyodbc
-                # ref: https://github.com/mkleehammer/pyodbc/issues/134#issuecomment-281739794
-                def handle_datetimeoffset_mssql_python(dto_value: t.Any) -> t.Any:
-                    import struct
-                    from datetime import datetime, timedelta, timezone
-
-                    # Unpack the DATETIMEOFFSET binary format:
-                    # Format: <6hI2h = (year, month, day, hour, minute, second, nanoseconds, tz_hour_offset, tz_minute_offset)
-                    tup = struct.unpack("<6hI2h", dto_value)
-                    return datetime(
-                        tup[0],
-                        tup[1],
-                        tup[2],
-                        tup[3],
-                        tup[4],
-                        tup[5],
-                        tup[6] // 1000,
-                        timezone(timedelta(hours=tup[7], minutes=tup[8])),
-                    )
-
-                conn.add_output_converter(-155, handle_datetimeoffset_mssql_python)
-
                 return conn
 
             return connect_mssql_python