Delete row ('1321', '20397') from daily_volatility

ticker_id 1321
day 20397
implied_open 1.28742258796403
implied_high 1.333458660776554
implied_low 1.074704182554437
implied_close 1.138202214019987
historical_open 1.385844536735633
historical_high 1.385844536735633
historical_low 1.385844536735633
historical_close 1.385844536735633
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