remove a specific column in numpy

>>> arr = np.array([[1,2,3,4], [5,6,7,8], [9,10,11,12]])
>>> arr
array([[ 1,  2,  3,  4],
       [ 5,  6,  7,  8],
       [ 9, 10, 11, 12]])

I am deleting the 3rd column as

>>> np.hstack(((np.delete(arr, np.s_[2:], 1)),(np.delete(arr, np.s_[:3],1))))
array([[ 1,  2,  4],
       [ 5,  6,  8],
       [ 9, 10, 12]])

Are there any better way ? Please consider this to be a novice question.