Delete row ('6', '20573') from daily_volatility

ticker_id 6
day 20573
implied_open 1.565226475625812
implied_high 1.574751180345644
implied_low 1.511253148880094
implied_close 1.523952755173204
historical_open 1.314409251336889
historical_high 1.314409251336889
historical_low 1.314409251336889
historical_close 1.314409251336889
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