Delete row ('249', '20732') from daily_volatility

ticker_id 249
day 20732
implied_open 0.3936877950864111
implied_high 0.4381364171122962
implied_low 0.3413019191273322
implied_close 0.3905128935131336
historical_open 0.3222525096876671
historical_high 0.3222525096876671
historical_low 0.3222525096876671
historical_close 0.3222525096876671
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