Update codeit.js

Author: benhatsor

lib/codeit.js

@@ -394,6 +394,10 @@ class CodeitElement extends HTMLElement {
 
     cd.on('cut', (e) => {
 
+      const selection = window.getSelection();
+      if (!selection.rangeCount) return false;
+      selection.deleteFromDocument();
+      
       const text = window.getSelection().toString();
       e.clipboardData.setData('text/plain', text);
       e.preventDefault();