Delete row ('2770', '20139') from daily_volatility

ticker_id 2770
day 20139
implied_open 0.1984313483298443
implied_high 0.2016062499031218
implied_low 0.1952564467565668
implied_close 0.2000187991164831
historical_open 0.2222431101294256
historical_high 0.2222431101294256
historical_low 0.2222431101294256
historical_close 0.2222431101294256
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