Delete row ('2768', '20732') from daily_volatility

ticker_id 2768
day 20732
implied_open 0.8762728342245925
implied_high 0.9000845960241738
implied_low 0.8095999011857647
implied_close 0.8540485232116499
historical_open 0.5889442418429779
historical_high 0.5889442418429779
historical_low 0.5889442418429779
historical_close 0.5889442418429779
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