Issue #2357937 by Wim Leers: Remove {{ feed_icons }} from page template (page.html.twig).

core/includes/common.inc

core/includes/theme.inc

core/lib/Drupal/Core/Page/DefaultHtmlFragmentRenderer.php

core/modules/system/src/Tests/Common/AddFeedTest.php

core/modules/system/templates/page.html.twig

core/modules/views/src/Plugin/views/style/Rss.php

core/modules/views/src/Tests/Wizard/BasicTest.php

core/themes/bartik/templates/page.html.twig

core/themes/seven/templates/page.html.twig