ASV/DEPR: deprecation warnings on using freq in Timestamp
```
[ 47.57%] ···· For parameters: None, 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
               
               For parameters: datetime.timezone.utc, 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
               
               For parameters: datetime.timezone(datetime.timedelta(seconds=3600)), 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
               
               For parameters: <DstTzInfo 'US/Pacific' LMT-1 day, 16:07:00 STD>, 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
               
               For parameters: tzfile('/usr/share/zoneinfo/Asia/Tokyo'), 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
               
               For parameters: tzlocal(), 'B'
               /home/runner/work/pandas/pandas/asv_bench/benchmarks/tslibs/timestamp.py:58: FutureWarning: The 'freq' argument in Timestamp is deprecated and will be removed in a future version.
                 self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)

[ 47.62%] ··· ...estamp.TimestampProperties.time_weekday_name                 ok
```

should fix the asv's
cc @jbrockmendel 