Delete row ('1338', '20714') from daily_volatility

ticker_id 1338
day 20714
implied_open 0.168269783383708
implied_high 0.1714446849569855
implied_low 0.1635074310237917
implied_close 0.1635074310237917
historical_open 0.1301709645043779
historical_high 0.1301709645043779
historical_low 0.1301709645043779
historical_close 0.1301709645043779
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