Given 2-D array X, a list of row indices rows and column indices
cols, return X with those rows AND columns removed.
Input
X =
[[ 0 1 2 3 4]
[ 5 6 7 8 9]
[10 11 12 13 14]
[15 16 17 18 19]]
rows = [0, 2]
cols = [1, 3]
Output
[[ 5 7 9]
[15 17 19]]