Delete row ('600', '20339') from daily_volatility

ticker_id 600
day 20339
implied_open 0.4619481789118776
implied_high 0.4746477852049876
implied_low 0.4603607281252388
implied_close 0.4635356296985163
historical_open 0.8429363677051787
historical_high 0.8429363677051787
historical_low 0.8429363677051787
historical_close 0.8429363677051787
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