Removal of v0 monitoring lines

Since v0_monitoring lines are being removed from Moore (Moore!1770 (merged)), fest configuration needs to be updated. I have replaced the lines with the ones defined in charm.prod_xsec.py, which have a relatively high rate (Moore!827 (merged)).

MooreOnlineConf/options/settings/fest2_mt.py

@@ -10,7 +10,7 @@
 ###############################################################################
 from Moore import options
 
-from Hlt2Conf.lines.monitoring.v0_monitoring import all_lines as mon_lines
+from Hlt2Conf.lines.charm.prod_xsec import all_lines as mon_lines
 
 
 def make_lines():