Remove duplicate dictionary in DataFormats/TauReco

In DataFormats/TauReco, the original classes_def.xml file defining dictionaries was previously split into four smaller files to speed up building.  However, two of the files contained a specification of a typedef that resolved to the same class.  In ROOT6, this causes a duplicate definition linking error.  The fix is to comment out one of the dictionary specifications with an explanation that it is a duplicate.  This resolves the link error.