Delete requires in applications where possible

admin/apps.php

admin/system.php

admin/users.php

apps/files_publiclink/admin.php

apps/files_publiclink/get.php

apps/media/index.php

apps/media/settings.php

apps/user_ldap/settings.php

apps/user_ldap/user_ldap.php

apps/user_openid/phpmyid.php

apps/user_openid/settings.php

apps/user_openid/user_openid.php

core/templates/404.php

docs/skeleton/admin.php

docs/skeleton/index.php

files/admin.php

files/ajax/list.php

files/download.php

files/index.php

files/settings.php