Delete row ('2604', '20685') from daily_volatility

ticker_id 2604
day 20685
implied_open 0.2016062499031218
implied_high 0.2016062499031218
implied_low 0.1952564467565668
implied_close 0.1952564467565668
historical_open 0.2333552656358969
historical_high 0.2333552656358969
historical_low 0.2333552656358969
historical_close 0.2333552656358969
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