Delete row ('56', '20733') from daily_volatility

ticker_id 56
day 20733
implied_open 0.5349709150972602
implied_high 0.549257972177009
implied_low 0.4921097438580139
implied_close 0.5270336611640665
historical_open 0.4286117123924637
historical_high 0.4286117123924637
historical_low 0.4286117123924637
historical_close 0.4286117123924637
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