Delete row ('193', '20700') from daily_volatility

ticker_id 193
day 20700
implied_open 0.5333834643106214
implied_high 0.5460830706037315
implied_low 0.4905222930713751
implied_close 0.5159215056575952
historical_open 0.8000751964659323
historical_high 0.8000751964659323
historical_low 0.8000751964659323
historical_close 0.8000751964659323
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