Remove smooth factorisation since it is completely broken.
Remove smooth factorisation since it is completely broken.

fredrik-johansson/flint2,dsroche/flint2,jpflori/flint2,dsroche/flint2,jpflori/flint2,jpflori/flint2,dsroche/flint2,fredrik-johansson/flint2,fredrik-johansson/flint2,jpflori/flint2,wbhart/flint2,wbhart/flint2,wbhart/flint2,dsroche/flint2