Revert "Adding addition logic to top-level CMakeLists.txt for Zoltan/MPI provided"

This reverts commit f4bd101e8459d0cb3a62354e3a720cec3faf8c29.
Merge branch 'github-dev'
Merge branch 'github-dev'
Merge branch 'github-dev'
fixing compile error in geometry manager global bounding box
Merge branch 'github-dev'