comment out unused variable

include/evalhyd/evald.hpp

@@ -352,8 +352,8 @@ namespace evalhyd
         elt["KGEPRIME"] = {"mean_obs", "mean_prd", "quad_obs", "quad_prd",
                            "r_pearson", "alpha", "bias"};
 
-        // register nested metrics (i.e. metric dependent on another metric)
-        // TODO
+        // TODO: register nested metrics (i.e. metric dependent on another metric)
+        // dep[...] = {...};
 
         // determine required elt/dep to be pre-computed
         std::vector<std::string> req_elt;
@@ -398,11 +398,8 @@ namespace evalhyd
             }
         }
 
-        // pre-compute required dep
-        for ( const auto& dependency : req_dep )
-        {
-            // TODO
-        }
+        // TODO: pre-compute required dep
+        // for ( const auto& dependency : req_dep ) {...}
 
         // retrieve or compute requested metrics
         std::vector<xt::xarray<double>> r;