Delete row ('1961', '20567') from daily_volatility

ticker_id 1961
day 20567
implied_open 0.2555795766488395
implied_high 0.2555795766488395
implied_low 0.2047811514763993
implied_close 0.2158933069828706
historical_open 0.2127184054095931
historical_high 0.2127184054095931
historical_low 0.2127184054095931
historical_close 0.2127184054095931
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