Delete row ('193', '20689') from daily_volatility

ticker_id 193
day 20689
implied_open 0.542908169030454
implied_high 0.5651324800433966
implied_low 0.5143340548709564
implied_close 0.530208562737344
historical_open 0.7969002948926548
historical_high 0.7969002948926548
historical_low 0.7969002948926548
historical_close 0.7969002948926548
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