Delete row ('136', '20705') from daily_volatility

ticker_id 136
day 20705
implied_open 0.5460830706037315
implied_high 0.5651324800433966
implied_low 0.5159215056575952
implied_close 0.5317960135239828
historical_open 0.6699042319615544
historical_high 0.6699042319615544
historical_low 0.6699042319615544
historical_close 0.6699042319615544
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