fixing tracktwo chains in Physics menu
following up from :
substitute "mediumRNN_tracktwo" -> "medium1_tracktwo".
"mediumRNN_tracktwo" is ill defined combination since RNN TauID should work properly only on "mediumRNN_tracktwoMVA" (already used for data taking in late 2018) and "mediumRNN_tracktwoMVABDT" (will be default for Run3).
"medium1_tracktwo" combination was already used for data taking in 2015-2017 period
Note 1: this is just a backup solution and further developments will be followed up on dedicated JIRA Note 2: although references have been updated, still triggers with "medium1_tracktwo" shows 0 counts but this we see events passing the different steps