Delete row ('1546', '20731') from daily_volatility

ticker_id 1546
day 20731
implied_open 0.3540015254204422
implied_high 0.3540015254204422
implied_low 0.3174901573277509
implied_close 0.3174901573277509
historical_open 0.2206556593427869
historical_high 0.2206556593427869
historical_low 0.2206556593427869
historical_close 0.2206556593427869
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