How do I drop the movie assigned with 'unknown' category from dataframe?
movie id movie title release date unknown Action Adventure Animation Childrens Comedy Crime ... Fantasy Film-Noir Horror Musical Mystery Romance Sci-Fi Thriller War Western
0 1 Toy Story 01-Jan-1995 0 0 0 1 1 1 0 ... 0 0 0 0 0 0 0 0 0 0
1 2 GoldenEye 01-Jan-1995 0 1 1 0 0 0 0 ... 0 0 0 0 0 0 0 1 0 0
2 3 Four Rooms 01-Jan-1995 0 0 0 0 0 0 0 ... 0 0 0 0 0 0 0 1 0 0
3 4 Get Shorty 01-Jan-1995 0 1 0 0 0 1 0 ... 0 0 0 0 0 0 0 0 0 0
4 5 Copycat 01-Jan-1995 0 0 0 0 0 0 1 ... 0 0 0 0 0 0 0 1 0 0
5 rows × 22 columns
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