Delete row ('630', '20731') from daily_volatility

ticker_id 630
day 20731
implied_open 0.7730885330930735
implied_high 1.371557479655884
implied_low 0.742926968146937
implied_close 1.239799064364867
historical_open 0.8413489169185399
historical_high 0.8413489169185399
historical_low 0.8413489169185399
historical_close 0.8413489169185399
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