Remove unused library dependencies from PyROOT
Remove unused library dependencies from PyROOT

PyROOT does not really need to link against all libraries
listed as dependencies in the CMakeLists.txt file. Some of
the libraries should be loaded on demand at runtime.

Related JIRA issues:
 - https://sft.its.cern.ch/jira/browse/ROOT-9728
 - https://sft.its.cern.ch/jira/browse/ROOT-9729

olifre/root,root-mirror/root,karies/root,root-mirror/root,karies/root,karies/root,karies/root,olifre/root,karies/root,karies/root,olifre/root,olifre/root,karies/root,root-mirror/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,olifre/root,karies/root,olifre/root,root-mirror/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,karies/root