Delete row ('136', '20248') from daily_volatility

ticker_id 136
day 20248
implied_open 0.3460642714872484
implied_high 0.3587638777803585
implied_low 0.3460642714872484
implied_close 0.3476517222738872
historical_open 0.3952752458730499
historical_high 0.3952752458730499
historical_low 0.3952752458730499
historical_close 0.3952752458730499
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