Fix stale i character, #6434

Author: helmo

interface/web/mail/templates/mail_user_mailbox_edit.htm

@@ -12,7 +12,7 @@
 							<select name="email_domain" id="email_domain" class="form-control" style="height:50px;min-width:170px;">{tmpl_var name='email_domain'}</select>
                         </div>
                         <div class="input-group-field">
-                          <a class="btn btn-default formbutton-narrow" href="javascript: navigator.clipboard.writeText(document.getElementById('email_local_part').value + '@' + document.getElementById('email_domain').value);" title="">i
+                          <a class="btn btn-default formbutton-narrow" href="javascript: navigator.clipboard.writeText(document.getElementById('email_local_part').value + '@' + document.getElementById('email_domain').value);" title="">
                             <span class="fa fa-clone"></span>
                           </a>
                         </div>