Delete row ('331', '20189') from daily_volatility

ticker_id 331
day 20189
implied_open 1.050892420754855
implied_high 1.058829674688049
implied_low 1.009618700302248
implied_close 1.015968503448803
historical_open 1.100103395140657
historical_high 1.100103395140657
historical_low 1.100103395140657
historical_close 1.100103395140657
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