Revert "Update factory script to use custom CMake including de-duplicate shared libs patch"

Following Slicer/Slicer@0df79d5af (r23528) , using a custom version of CMake is not
required anymore.

This reverts commit 4675e22ab0d19becc800d9a79f6d4447019948f5.
Revert "Update factory nightly script to use CMake 3.0.0 to build Slicer"

Following Slicer/Slicer@0df79d5af (r23528) , using CMake 3.0.0 is not
required anymore.

This reverts commit bac768be437879d504acd5aed0b7c0c0d6a9851e.