Delete row ('1798', '20217') from daily_volatility

ticker_id 1798
day 20217
implied_open 0.530208562737344
implied_high 0.5365583658838989
implied_low 0.5206838580175115
implied_close 0.5222713088041502
historical_open 0.8016626472525711
historical_high 0.8016626472525711
historical_low 0.8016626472525711
historical_close 0.8016626472525711
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