Revert "Update DaxModelVersion before exporting obfuscated model (#9)"

This reverts commit 115a7bf.

src/Dax.Vpax.Obfuscator/VpaxObfuscator.cs

@@ -33,10 +33,7 @@ private static ObfuscationDictionary ObfuscateImpl(Stream stream, ObfuscationDic
         var texts = obfuscator.Texts.Select((t) => new ObfuscationText(t.Value, t.ObfuscatedValue)).ToArray();
         var result = new ObfuscationDictionary(id: model.ObfuscatorDictionaryId, texts);
 
-        // Update DaxModelVersion to the current version before exporting the obfuscated model.
-        model.DaxModelVersion = Metadata.Model.CurrentDaxModelVersion;
-
-        VpaxTools.ExportVpax(stream, model, viewVpa: null, database: null); 
+        VpaxTools.ExportVpax(stream, model, viewVpa: null, database: null);
         return result;
     }