Delete row ('2305', '20388') from daily_volatility

ticker_id 2305
day 20388
implied_open 0.7730885330930735
implied_high 0.8270618598387911
implied_low 0.7334022634271045
implied_close 0.7810257870262672
historical_open 0.5841818894830616
historical_high 0.5841818894830616
historical_low 0.5841818894830616
historical_close 0.5841818894830616
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