Delete row ('1934', '20675') from daily_volatility

ticker_id 1934
day 20675
implied_open 0.6318054130822243
implied_high 0.6937159937611357
implied_low 0.6318054130822243
implied_close 0.6857787398279419
historical_open 0.4762352359916263
historical_high 0.4762352359916263
historical_low 0.4762352359916263
historical_close 0.4762352359916263
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