Delete row ('2756', '20027') from daily_volatility

ticker_id 2756
day 20027
implied_open 0.1762070373169017
implied_high 0.1904940943966505
implied_low 0.1762070373169017
implied_close 0.1889066436100118
historical_open 0.1190588089979066
historical_high 0.1190588089979066
historical_low 0.1190588089979066
historical_close 0.1190588089979066
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