Delete row ('2661', '20378') from daily_volatility

ticker_id 2661
day 20378
implied_open 0.6603795272417218
implied_high 0.6619669780283606
implied_low 0.6445050193753342
implied_close 0.6492673717352505
historical_open 0.4762352359916263
historical_high 0.4762352359916263
historical_low 0.4762352359916263
historical_close 0.4762352359916263
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