Remove duplicate dd4hep_set_compiler_flags()

examples/CMakeLists.txt

@@ -30,9 +30,9 @@ find_package ( DD4hep REQUIRED )
 include ( ${DD4hep_DIR}/cmake/DD4hep.cmake )
 include ( ${DD4hep_DIR}/cmake/DD4hepBuild.cmake )
 #
-dd4hep_set_compiler_flags()
-#
 find_package ( ROOT REQUIRED COMPONENTS Geom GenVector )
+include(${ROOT_USE_FILE})
+#
 dd4hep_set_compiler_flags()
 #
 dd4hep_configure_output()