Delete row ('600', '20166') from daily_volatility

ticker_id 600
day 20166
implied_open 0.7016532476943295
implied_high 0.7080030508408844
implied_low 0.6191058067891142
implied_close 0.6302179622955855
historical_open 0.8159497043323198
historical_high 0.8159497043323198
historical_low 0.8159497043323198
historical_close 0.8159497043323198
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