Delete row ('1438', '20734') from daily_volatility

ticker_id 1438
day 20734
implied_open 0.2349427164225357
implied_high 0.2460548719290069
implied_low 0.2143058561962319
implied_close 0.2428799703557294
historical_open 0.1968438975432056
historical_high 0.1968438975432056
historical_low 0.1968438975432056
historical_close 0.1968438975432056
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