Delete row ('2631', '20697') from daily_volatility

ticker_id 2631
day 20697
implied_open 0.7683261807331572
implied_high 0.8127748027590423
implied_low 0.7572140252266859
implied_close 0.788963040959461
historical_open 1.030255560528552
historical_high 1.030255560528552
historical_low 1.030255560528552
historical_close 1.030255560528552
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