Delete row ('2766', '20698') from daily_volatility

ticker_id 2766
day 20698
implied_open 0.1952564467565668
implied_high 0.1952564467565668
implied_low 0.174619586530263
implied_close 0.1841442912500955
historical_open 0.1920815451832893
historical_high 0.1920815451832893
historical_low 0.1920815451832893
historical_close 0.1920815451832893
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