Delete row ('2539', '20291') from daily_volatility

ticker_id 2539
day 20291
implied_open 0.3349521159807772
implied_high 0.3381270175540547
implied_low 0.3111403541811958
implied_close 0.3159027065411121
historical_open 0.2174807577695094
historical_high 0.2174807577695094
historical_low 0.2174807577695094
historical_close 0.2174807577695094
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