TrigValTools+PerfMonAna: remove PyRootLib module
Change rootcomp.py
to use the ROOT import utility from PyUtils
and delete the now unused module from PerfMonAna.
Relates to ATEAM-989.
Change rootcomp.py
to use the ROOT import utility from PyUtils
and delete the now unused module from PerfMonAna.
Relates to ATEAM-989.