Delete row ('2756', '20494') from daily_volatility

ticker_id 2756
day 20494
implied_open 0.2222431101294256
implied_high 0.2222431101294256
implied_low 0.2000187991164831
implied_close 0.2095435038363156
historical_open 0.1730321357436242
historical_high 0.1730321357436242
historical_low 0.1730321357436242
historical_close 0.1730321357436242
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