How to hide the Login button?

XWiki 16.10.0+

XWiki has a login button on the top navigation bar. 

The register button can easily be removed by removing the guest user permission to Register.

The Log-in button needs a more specific action:

• Log in as an admin of your wiki
• Access the hidden Registration page (Show hidden pages if needed).
• Edit the objects of the Registration page (Set advanced mode to edit to have the UI button to edit page objects).
• Update the content of the XWiki.UIExtensionClass xobject you can find on the Registration page:
  • Remove lines 11 to 15, containing the template for the button:

    #if ($xcontext.user == 'XWiki.XWikiGuest' && !$xcontext.inactiveUserReference)
    <li>
      <a href="$xwiki.getURL('XWiki.XWikiLogin', 'login', "xredirect=$redirectURL&loginLink=1")" id="tmLogin" rel="nofollow">$escapetool.xml($services.localization.render('login'))</a>
    </li>
    #end

• Save your changes.

From then on, the login button in the navbar will not be shown anymore on your wiki.