Delete row ('1953', '20481') from daily_volatility

ticker_id 1953
day 20481
implied_open 0.2444674211423682
implied_high 0.2492297735022844
implied_low 0.2365301672091744
implied_close 0.2476423227156457
historical_open 0.1523952755173204
historical_high 0.1523952755173204
historical_low 0.1523952755173204
historical_close 0.1523952755173204
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