Delete row ('1571', '20745') from daily_volatility

ticker_id 1571
day 20745
implied_open 0.2460548719290069
implied_high 0.2587544782221169
implied_low 0.2460548719290069
implied_close 0.252404675075562
historical_open 0.2047811514763993
historical_high 0.2047811514763993
historical_low 0.2047811514763993
historical_close 0.2047811514763993
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