Delete row ('1999', '20732') from daily_volatility

ticker_id 1999
day 20732
implied_open 0.2698666337285883
implied_high 0.277803887661782
implied_low 0.2698666337285883
implied_close 0.2762164368751432
historical_open 0.2000187991164831
historical_high 0.2000187991164831
historical_low 0.2000187991164831
historical_close 0.2000187991164831
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