Delete row ('161', '20731') from daily_volatility

ticker_id 161
day 20731
implied_open 0.2793913384484208
implied_high 0.2920909447415308
implied_low 0.2730415353018658
implied_close 0.2793913384484208
historical_open 0.2206556593427869
historical_high 0.2206556593427869
historical_low 0.2206556593427869
historical_close 0.2206556593427869
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