Delete row ('600', '20448') from daily_volatility

ticker_id 600
day 20448
implied_open 0.6064062004960041
implied_high 0.620693257575753
implied_low 0.6000563973494492
implied_close 0.6095811020692816
historical_open 0.7921379425327385
historical_high 0.7921379425327385
historical_low 0.7921379425327385
historical_close 0.7921379425327385
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