Delete row ('2766', '20742') from daily_volatility

ticker_id 2766
day 20742
implied_open 0.2047811514763993
implied_high 0.2174807577695094
implied_low 0.1952564467565668
implied_close 0.2143058561962319
historical_open 0.1539827263039592
historical_high 0.1539827263039592
historical_low 0.1539827263039592
historical_close 0.1539827263039592
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