Delete row ('268', '20125') from daily_volatility

ticker_id 268
day 20125
implied_open 0.542908169030454
implied_high 0.542908169030454
implied_low 0.5254462103774277
implied_close 0.5317960135239828
historical_open 0.671491682748193
historical_high 0.671491682748193
historical_low 0.671491682748193
historical_close 0.671491682748193
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