Delete row ('1174', '20727') from daily_volatility

ticker_id 1174
day 20727
implied_open 0.6841912890413031
implied_high 0.6937159937611357
implied_low 0.6651418796016381
implied_close 0.6651418796016381
historical_open 0.6143434544291979
historical_high 0.6143434544291979
historical_low 0.6143434544291979
historical_close 0.6143434544291979
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