Delete row ('1961', '20619') from daily_volatility

ticker_id 1961
day 20619
implied_open 0.2127184054095931
implied_high 0.2206556593427869
implied_low 0.2063686022630381
implied_close 0.2158933069828706
historical_open 0.2222431101294256
historical_high 0.2222431101294256
historical_low 0.2222431101294256
historical_close 0.2222431101294256
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