From the LinearAlgebra Directory

The function CholeskyDecomposition from the package Cholesky.m has been moved entirely to the kernel. The syntax of the function is entirely the same. Note that the version function Experimental`CholeskyDecomposition, which returned the result in a transposed form, has been removed.

The functions VectorNorm and MatrixNorm from the MatrixManipulation.m package have been superseded by the kernel function Norm. The package functions will continue to work for the time being for compatability purposes, calling the kernel function when appropriate. However, uses of these functions should be transitioned to Norm as soon as is convenient.