Delete row ('2687', '20168') from daily_volatility

ticker_id 2687
day 20168
implied_open 0.427024261605825
implied_high 0.4444862202588513
implied_low 0.4190870076726312
implied_close 0.4254368108191862
historical_open 0.4571858265519613
historical_high 0.4571858265519613
historical_low 0.4571858265519613
historical_close 0.4571858265519613
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