Delete row ('2793', '20731') from daily_volatility

ticker_id 2793
day 20731
implied_open 0.5000469977912076
implied_high 0.5905316926296166
implied_low 0.5000469977912076
implied_close 0.5778320863365066
historical_open 0.2984407478880858
historical_high 0.2984407478880858
historical_low 0.2984407478880858
historical_close 0.2984407478880858
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