Only load copy-and-paste helper on pages that use it

This change helps improve load times for key non-documentation pages
such as https://kubernetes.io/

static/js/script.js

@@ -9,40 +9,6 @@
 var body;
 
 //helper functions
-function copyCode(elem){
-     if (document.getElementById(elem)) {
-         // create hidden text element, if it doesn't already exist
-         var targetId = "_hiddenCopyText_";
-             // must use a temporary form element for the selection and copy
-             target = document.getElementById(targetId);
-             if (!target) {
-                 var target = document.createElement("textarea");
-                 target.style.position = "absolute";
-                 target.style.left = "-9999px";
-                 target.style.top = "0";
-                 target.id = targetId;
-                 document.body.appendChild(target);
-             }
-             target.value = document.getElementById(elem).innerText;
-         // select the content
-         target.select();
-
-         // copy the selection
-         var succeed;
-         try {
-             succeed = document.execCommand("copy");
-         } catch(e) {
-             swal("Oh, no...","Sorry, your browser doesn't support document.execCommand('copy'), so we can't copy this code to your clipboard.");
-             succeed = false;
-         }
-         if (succeed) swal("Copied to clipboard: ",elem);
-         return succeed;
-     } else {
-         swal("Oops!",elem + " not found when trying to copy code");
-         return false;
-     }
- }
-
 function booleanAttributeValue(element, attribute, defaultValue){
     // returns true if an attribute is present with no value
     // e.g. booleanAttributeValue(element, 'data-modal', false);