Delete row ('2770', '20388') from daily_volatility

ticker_id 2770
day 20388
implied_open 0.2270054624893419
implied_high 0.2365301672091744
implied_low 0.2190682085561481
implied_close 0.2254180117027031
historical_open 0.1904940943966505
historical_high 0.1904940943966505
historical_low 0.1904940943966505
historical_close 0.1904940943966505
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