Delete row ('2387', '20496') from daily_volatility

ticker_id 2387
day 20496
implied_open 0.7381646157870208
implied_high 0.7794383362396284
implied_low 0.7349897142137433
implied_close 0.7588014760133247
historical_open 0.8095999011857647
historical_high 0.8095999011857647
historical_low 0.8095999011857647
historical_close 0.8095999011857647
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