Delete row ('1764', '20649') from daily_volatility

ticker_id 1764
day 20649
implied_open 0.7445144189335758
implied_high 0.7572140252266859
implied_low 0.7286399110671883
implied_close 0.7540391236534084
historical_open 0.6937159937611357
historical_high 0.6937159937611357
historical_low 0.6937159937611357
historical_close 0.6937159937611357
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