move the hard dump of model

source/sample/transformer/Transformer.cpp

@@ -68,7 +68,7 @@ int TransformerMain(int argc, const char ** argv)
         char * fn = new char[MAX_LINE_LENGTH];
         char * fn1 = new char[MAX_LINE_LENGTH];
         char * fn2 = new char[MAX_LINE_LENGTH];
-        modelFN = strcmp(modelFN, "") ? modelFN : (char *)"checkpoint.model";
+        //modelFN = strcmp(modelFN, "") ? modelFN : (char *)"checkpoint.model";
 
         int epoch;
         bool isTrain;