Delete row ('84', '20735') from daily_volatility

ticker_id 84
day 20735
implied_open 0.5952940449895329
implied_high 0.633392863868863
implied_low 0.5952940449895329
implied_close 0.6159309052158367
historical_open 0.3936877950864111
historical_high 0.3936877950864111
historical_low 0.3936877950864111
historical_close 0.3936877950864111
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