Delete row ('6', '20542') from daily_volatility

ticker_id 6
day 20542
implied_open 1.277897883244197
implied_high 1.328696308416637
implied_low 1.266785727737726
implied_close 1.303297095830418
historical_open 1.619199802371529
historical_high 1.619199802371529
historical_low 1.619199802371529
historical_close 1.619199802371529
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