code: def test_delete_doesnt_infer_freq(self):
      # GH#30655 behavior matches DatetimeIndex
  
      tdi = TimedeltaIndex(
          ["1 Day", "2 Days", None, "3 Days", "4 Days"]
      )
      result = tdi.delete(2)
      assert result.freq is None
  
imports: from pandas import TimedeltaIndex, timedelta_range
  import pandas._testing
label_desc: Use image node_id 3 for calling the TestTimedeltaIndexDelete obj's underlying member method code with example usage: obj.test_delete_doesnt_infer_freq() without return types