Delete row ('1953', '20390') from daily_volatility

ticker_id 1953
day 20390
implied_open 0.1952564467565668
implied_high 0.2079560530496768
implied_low 0.1889066436100118
implied_close 0.2047811514763993
historical_open 0.2016062499031218
historical_high 0.2016062499031218
historical_low 0.2016062499031218
historical_close 0.2016062499031218
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