Delete row ('1903', '20734') from daily_volatility

ticker_id 1903
day 20734
implied_open 0.3159027065411121
implied_high 0.3159027065411121
implied_low 0.2809787892350595
implied_close 0.2952658463148083
historical_open 0.2190682085561481
historical_high 0.2190682085561481
historical_low 0.2190682085561481
historical_close 0.2190682085561481
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