Delete row ('297', '20699') from daily_volatility

ticker_id 297
day 20699
implied_open 0.2095435038363156
implied_high 0.2111309546229543
implied_low 0.2016062499031218
implied_close 0.2031937006897606
historical_open 0.1730321357436242
historical_high 0.1730321357436242
historical_low 0.1730321357436242
historical_close 0.1730321357436242
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