Delete row ('510', '20167') from daily_volatility

ticker_id 510
day 20167
implied_open 0.5286211119507053
implied_high 0.5365583658838989
implied_low 0.4905222930713751
implied_close 0.5333834643106214
historical_open 0.6540297240951668
historical_high 0.6540297240951668
historical_low 0.6540297240951668
historical_close 0.6540297240951668
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