Delete row ('2539', '20460') from daily_volatility

ticker_id 2539
day 20460
implied_open 0.4016250490196049
implied_high 0.4095623029527987
implied_low 0.3921003442997724
implied_close 0.3968626966596887
historical_open 0.2857411415949758
historical_high 0.2857411415949758
historical_low 0.2857411415949758
historical_close 0.2857411415949758
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