1

Enter your host's file manager or use an FTP client to access your site. Highlight the page name and press "Delete" to delete the index.php page from your Joomla! site.
2

Go to google.com/webmasters/tools/removals.
3

Click "New Removal Request."
4

Type the exact URL of the index.php page, such as "example.com/index.php".
5

Click "Continue."
6

Check the box next to the line that begins as follows: "For permanent removal."
7

Click "Submit Request."