Remove leftover debugging code

Author: KoraLyn

xivModdingFramework/Models/FileTypes/Mdl.cs

@@ -367,7 +367,6 @@ private async Task ExportMaterialsForModel(TTModel model, string outputFilePath,
                     // Failing to resolve a material is considered a non-critical error.
                     // Continue attempting to resolve the rest of the materials in the model.
                     //throw exc;
-                    var z = "d";
                 }
                 materialIdx++;
             }