Delete row ('331', '20109') from daily_volatility

ticker_id 331
day 20109
implied_open 0.8334116629853461
implied_high 0.8683355802913987
implied_low 0.8318242121987074
implied_close 0.8572234247849274
historical_open 0.8159497043323198
historical_high 0.8159497043323198
historical_low 0.8159497043323198
historical_close 0.8159497043323198
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