Revert "Added a function for out-of-sample embedding"

This reverts commits
5a8cad4215fc7039906d64b70df34640f1cb58ba
0ba46ee3c7b92d3816478af58b88a6774750c590
ffa8443ae23959b7e52f54dbaaf62d141cf3d76f
f3277e6843699ab0c27af7084e1b862d5d25737e
68cd5eee97be9c8bb58eee8c324a1bbc33f1518c
Revert "gclust initial commit"

This reverts commit 1ab9b59f6f74864d0997f22907b1b205eb2926b0.