Delete row ('1068', '20657') from daily_volatility

ticker_id 1068
day 20657
implied_open 0.6079936512826429
implied_high 0.6191058067891142
implied_low 0.6048187497093654
implied_close 0.6159309052158367
historical_open 0.6889536414012194
historical_high 0.6889536414012194
historical_low 0.6889536414012194
historical_close 0.6889536414012194
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