Delete row ('2503', '20732') from daily_volatility

ticker_id 2503
day 20732
implied_open 0.4079748521661599
implied_high 0.4095623029527987
implied_low 0.3857505411532173
implied_close 0.3984501474463274
historical_open 0.2746289860885045
historical_high 0.2746289860885045
historical_low 0.2746289860885045
historical_close 0.2746289860885045
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