Getting rid of search box and other activity icons from the login page

Hey new to this....i installed ELGG 1.11.4 today and when i went to login page, im getting the search box on top of login screen and other activity and other tabs...i just want a simple login page with one of the logins as twitter..twitter functionality is taken care of by activating Twitter API plugin....plz help me overcome search box and other tabs which should appear to me once i login on my dashboard.