Delete row ('2760', '20418') from daily_volatility

ticker_id 2760
day 20418
implied_open 0.1555701770905979
implied_high 0.1555701770905979
implied_low 0.1412831200108491
implied_close 0.1460454723707654
historical_open 0.1508078247306817
historical_high 0.1508078247306817
historical_low 0.1508078247306817
historical_close 0.1508078247306817
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