remove unnecessary

Frontend/src/components/xml/XmlOutputFieldComponent.vue

@@ -18,6 +18,7 @@ const result = ref('');
 
 let enginesForCurrentTool = ref(["saxon", "xalan", "libxml"]);
 
+const allVersionsOfXpath = ["2.0", "3.0", "3.1"];
 const allVersions = ["1.0", "2.0", "3.0", "3.1"];
 let versionsForCurrentEngine = ref([""]);
 
@@ -73,7 +74,7 @@ function changeAvailableVersionsOfXPath() {
     if(engine.value == "xalan" || engine.value == "libxml")
         versionsForCurrentEngine.value = ["1.0"];
     else if (engine.value == "saxon")
-        versionsForCurrentEngine.value = allVersions;
+        versionsForCurrentEngine.value = allVersionsOfXpath;
 }
 
 function selectDefaultEngine() {