Import ROOT with ROOT6Setup()

This was silently crashing beamspotman.py. The change here stops the silent
crash, and removing the sys.argv manipulation doesn't seem to have caused
issues.

InnerDetector/InDetExample/InDetBeamSpotExample/python/ExtractLBFileMap.py

@@ -5,17 +5,14 @@ import user
 import sys, traceback
 import os, re,commands,fnmatch
 from glob import glob
-# Turn off X11 requirement in ROOT
-sys.argv = sys.argv[:1] + ['-b'] + sys.argv[1:]
-from PyUtils.Helpers import ShutUp
 import ROOT
+from PyUtils.Helpers import ShutUp, ROOT6Setup
+ROOT6Setup()
 rootMsg = ShutUp()
 rootMsg.mute()
-# Turn off X11 requirement in ROOT
-sys.argv.remove('-b')
 from PyCool import coral
 from time import ctime
-import PyCintex
+import cppyy
 import AthenaROOTAccess.transientTree
 rootMsg.unMute()