Delete row ('438', '20735') from daily_volatility

ticker_id 438
day 20735
implied_open 0.4778226867782651
implied_high 1.022318306595358
implied_low 0.4778226867782651
implied_close 0.9397708656901427
historical_open 0.1650948818104304
historical_high 0.1650948818104304
historical_low 0.1650948818104304
historical_close 0.1650948818104304
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