Delete row ('1544', '20473') from daily_volatility

ticker_id 1544
day 20473
implied_open 0.2397050687824519
implied_high 0.2730415353018658
implied_low 0.2397050687824519
implied_close 0.271454084515227
historical_open 0.2031937006897606
historical_high 0.2031937006897606
historical_low 0.2031937006897606
historical_close 0.2031937006897606
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