Delete row ('53', '20257') from daily_volatility

ticker_id 53
day 20257
implied_open 0.2968532971014471
implied_high 0.2968532971014471
implied_low 0.2571670274354782
implied_close 0.2889160431682533
historical_open 0.3571764269937197
historical_high 0.3571764269937197
historical_low 0.3571764269937197
historical_close 0.3571764269937197
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