Delete row ('600', '20482') from daily_volatility

ticker_id 600
day 20482
implied_open 0.9096093007440063
implied_high 0.9286587101836714
implied_low 0.8969096944508963
implied_close 0.9127842023172839
historical_open 0.7095905016275231
historical_high 0.7095905016275231
historical_low 0.7095905016275231
historical_close 0.7095905016275231
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