Delete row ('2479', '20731') from daily_volatility

ticker_id 2479
day 20731
implied_open 0.4301991631791025
implied_high 0.4555983757653225
implied_low 0.4301991631791025
implied_close 0.4476611218321287
historical_open 0.3746383856467461
historical_high 0.3746383856467461
historical_low 0.3746383856467461
historical_close 0.3746383856467461
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