Delete row ('2661', '20734') from daily_volatility

ticker_id 2661
day 20734
implied_open 0.5317960135239828
implied_high 0.5349709150972602
implied_low 0.4730603344183488
implied_close 0.4889348422847364
historical_open 0.4540109249786838
historical_high 0.4540109249786838
historical_low 0.4540109249786838
historical_close 0.4540109249786838
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