Delete row ('193', '20488') from daily_volatility

ticker_id 193
day 20488
implied_open 0.9143716531039225
implied_high 1.26202337537781
implied_low 0.7349897142137433
implied_close 0.9334210625435876
historical_open 0.7873755901728222
historical_high 0.7873755901728222
historical_low 0.7873755901728222
historical_close 0.7873755901728222
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