Delete row ('12', '20014') from daily_volatility

ticker_id 12
day 20014
implied_open 0.2968532971014471
implied_high 0.3000281986747246
implied_low 0.2920909447415308
implied_close 0.2968532971014471
historical_open 0.1841442912500955
historical_high 0.1841442912500955
historical_low 0.1841442912500955
historical_close 0.1841442912500955
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