Delete row ('2764', '20427') from daily_volatility

ticker_id 2764
day 20427
implied_open 0.2333552656358969
implied_high 0.2333552656358969
implied_low 0.1127090058513516
implied_close 0.1301709645043779
historical_open 0.1317584152910166
historical_high 0.1317584152910166
historical_low 0.1317584152910166
historical_close 0.1317584152910166
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