Delete row ('2770', '20704') from daily_volatility

ticker_id 2770
day 20704
implied_open 0.2666917321553107
implied_high 0.2873285923816146
implied_low 0.2666917321553107
implied_close 0.2857411415949758
historical_open 0.3016156494613633
historical_high 0.3016156494613633
historical_low 0.3016156494613633
historical_close 0.3016156494613633
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