Delete row ('754', '20266') from daily_volatility

ticker_id 754
day 20266
implied_open 0.1841442912500955
implied_high 0.187319192823373
implied_low 0.1777944881035405
implied_close 0.1841442912500955
historical_open 0.1920815451832893
historical_high 0.1920815451832893
historical_low 0.1920815451832893
historical_close 0.1920815451832893
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