Delete row ('309', '20732') from daily_volatility

ticker_id 309
day 20732
implied_open 0.7207026571339945
implied_high 0.7445144189335758
implied_low 0.6349803146555018
implied_close 0.7349897142137433
historical_open 0.5127466040843177
historical_high 0.5127466040843177
historical_low 0.5127466040843177
historical_close 0.5127466040843177
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