Delete row ('1544', '20619') from daily_volatility

ticker_id 1544
day 20619
implied_open 0.2460548719290069
implied_high 0.2460548719290069
implied_low 0.2365301672091744
implied_close 0.2397050687824519
historical_open 0.2206556593427869
historical_high 0.2206556593427869
historical_low 0.2206556593427869
historical_close 0.2206556593427869
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