REFAC: remove SetDocName()

app/otbTimeSeriesIndexTrend.cxx

@@ -158,7 +158,6 @@ private:
     SetDescription("Compute the trend of the vegetation index time series");
 
     // Documentation
-    SetDocName("TimeSeriesIndexTrend");
     SetDocLongDescription("This application implements the method of Leroux et al. (https://doi.org/10.1016/j.rse.2017.01.014)");
     SetDocLimitations("None");
     SetDocAuthors("Remi Cresson");