Delete row ('2560', '20734') from daily_volatility

ticker_id 2560
day 20734
implied_open 0.2476423227156457
implied_high 0.265104281368672
implied_low 0.2031937006897606
implied_close 0.2063686022630381
historical_open 0.2000187991164831
historical_high 0.2000187991164831
historical_low 0.2000187991164831
historical_close 0.2000187991164831
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