Fixed duplicate pagination on explore#groups
What does this MR do?
Removes the duplicated pagination on explore#groups. Pagination exists in https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/views/explore/groups/_groups.html.haml so that it gets inserted after an AJAX request when searching. So I have removed it from this file https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/views/explore/groups/index.html.haml
Screenshots (if relevant)
What are the relevant issue numbers?
Closes #29531 (closed)