Delete row ('189', '20698') from daily_volatility

ticker_id 189
day 20698
implied_open 0.7492767712934921
implied_high 0.7556265744400472
implied_low 0.6953034445477744
implied_close 0.7111779524141619
historical_open 0.911196751530645
historical_high 0.911196751530645
historical_low 0.911196751530645
historical_close 0.911196751530645
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