Delete row ('738', '20154') from daily_volatility

ticker_id 738
day 20154
implied_open 0.4968720962179302
implied_high 0.5222713088041502
implied_low 0.4873473914980976
implied_close 0.4921097438580139
historical_open 0.5571952261102028
historical_high 0.5571952261102028
historical_low 0.5571952261102028
historical_close 0.5571952261102028
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