Delete row ('1798', '20749') from daily_volatility

ticker_id 1798
day 20749
implied_open 0.4254368108191862
implied_high 0.427024261605825
implied_low 0.4159121060993537
implied_close 0.4222619092459087
historical_open 0.3143152557544734
historical_high 0.3143152557544734
historical_low 0.3143152557544734
historical_close 0.3143152557544734
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