Delete row ('2646', '20731') from daily_volatility

ticker_id 2646
day 20731
implied_open 0.3301897636208609
implied_high 0.3397144683406934
implied_low 0.3190776081143896
implied_close 0.3317772144074996
historical_open 0.2381176179958132
historical_high 0.2381176179958132
historical_low 0.2381176179958132
historical_close 0.2381176179958132
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