Delete row ('1247', '20733') from daily_volatility

ticker_id 1247
day 20733
implied_open 0.8000751964659323
implied_high 0.9096093007440063
implied_low 0.8000751964659323
implied_close 0.8873849897310637
historical_open 0.3905128935131336
historical_high 0.3905128935131336
historical_low 0.3905128935131336
historical_close 0.3905128935131336
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