Delete row ('754', '20726') from daily_volatility

ticker_id 754
day 20726
implied_open 0.2365301672091744
implied_high 0.252404675075562
implied_low 0.2365301672091744
implied_close 0.2460548719290069
historical_open 0.1952564467565668
historical_high 0.1952564467565668
historical_low 0.1952564467565668
historical_close 0.1952564467565668
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