Delete row ('1553', '20698') from daily_volatility

ticker_id 1553
day 20698
implied_open 0.8159497043323198
implied_high 0.8222995074788748
implied_low 0.7810257870262672
implied_close 0.8111873519724035
historical_open 0.9096093007440063
historical_high 0.9096093007440063
historical_low 0.9096093007440063
historical_close 0.9096093007440063
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