Update headfoot.js, hotfix: removed disclaimer in production version

Removed disclaimer on production branch

js/headfoot.js

@@ -48,18 +48,6 @@ function head() {
     navheader.id = "header";
     navheader.classList.add("clear");
 
-    // disclaimer
-    let alertdiv = document.createElement("div");
-    alertdiv.classList.add("alert", "alert-danger", "alert-dismissible", "fade", "show");
-    alertdiv.style = "text-align:center;";
-    alertdiv.innerHTML="<strong>Disclaimer</strong> This website is under construction and in prototype-phase. It is not for public use."
-    let alertbutton = document.createElement("button");
-    alertbutton.type = "button";
-    alertbutton.classList.add("close");
-    alertbutton.setAttribute("data-dismiss", "alert");
-    alertbutton.innerHTML = "&times;";
-    prependChild(alertdiv, alertbutton);
-
     // navigation header
     let navbar = document.createElement("nav");
     navbar.classList.add("navbar", "navbar-expand-md", "navbar-light");