Delete row ('40', '20300') from daily_volatility

ticker_id 40
day 20300
implied_open 0.2349427164225357
implied_high 0.2444674211423682
implied_low 0.2301803640626194
implied_close 0.2412925195690907
historical_open 0.3254274112609447
historical_high 0.3254274112609447
historical_low 0.3254274112609447
historical_close 0.3254274112609447
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