Delete row ('1473', '20735') from daily_volatility

ticker_id 1473
day 20735
implied_open 0.3889254427264949
implied_high 0.4063874013795212
implied_low 0.3889254427264949
implied_close 0.4016250490196049
historical_open 0.3159027065411121
historical_high 0.3159027065411121
historical_low 0.3159027065411121
historical_close 0.3159027065411121
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