Delete row ('223', '20731') from daily_volatility

ticker_id 223
day 20731
implied_open 0.0714352853987439
implied_high 0.2270054624893419
implied_low 0.0269866633728588
implied_close 0.0269866633728588
historical_open 0.0539733267457176
historical_high 0.0539733267457176
historical_low 0.0539733267457176
historical_close 0.0539733267457176
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