Delete row ('2519', '20676') from daily_volatility

ticker_id 2519
day 20676
implied_open 0.3936877950864111
implied_high 0.3984501474463274
implied_low 0.3746383856467461
implied_close 0.3794007380066624
historical_open 0.4921097438580139
historical_high 0.4921097438580139
historical_low 0.4921097438580139
historical_close 0.4921097438580139
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