Delete row ('697', '20102') from daily_volatility

ticker_id 697
day 20102
implied_open 0.2127184054095931
implied_high 0.2127184054095931
implied_low 0.2031937006897606
implied_close 0.2095435038363156
historical_open 0.2016062499031218
historical_high 0.2016062499031218
historical_low 0.2016062499031218
historical_close 0.2016062499031218
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