Delete row ('9', '20154') from daily_volatility

ticker_id 9
day 20154
implied_open 0.2920909447415308
implied_high 0.2952658463148083
implied_low 0.2698666337285883
implied_close 0.2730415353018658
historical_open 0.3047905510346408
historical_high 0.3047905510346408
historical_low 0.3047905510346408
historical_close 0.3047905510346408
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