Delete row ('2757', '20207') from daily_volatility

ticker_id 2757
day 20207
implied_open 0.2333552656358969
implied_high 0.2381176179958132
implied_low 0.2127184054095931
implied_close 0.2238305609160644
historical_open 0.3571764269937197
historical_high 0.3571764269937197
historical_low 0.3571764269937197
historical_close 0.3571764269937197
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