Delete row ('1307', '20731') from daily_volatility

ticker_id 1307
day 20731
implied_open 0.7127654032008007
implied_high 0.7349897142137433
implied_low 0.6572046256684443
implied_close 0.6873661906145806
historical_open 0.7969002948926548
historical_high 0.7969002948926548
historical_low 0.7969002948926548
historical_close 0.7969002948926548
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