Delete row ('600', '20381') from daily_volatility

ticker_id 600
day 20381
implied_open 0.7556265744400472
implied_high 0.7603889267999634
implied_low 0.7286399110671883
implied_close 0.7381646157870208
historical_open 0.5587826768968416
historical_high 0.5587826768968416
historical_low 0.5587826768968416
historical_close 0.5587826768968416
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