Delete row ('4', '20725') from daily_volatility

ticker_id 4
day 20725
implied_open 0.5190964072308727
implied_high 0.5413207182438152
implied_low 0.5143340548709564
implied_close 0.5206838580175115
historical_open 0.4127372045260762
historical_high 0.4127372045260762
historical_low 0.4127372045260762
historical_close 0.4127372045260762
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