Disable recent search on issue boards

app/views/shared/issuable/_search_bar.html.haml

@@ -12,6 +12,7 @@
             class: "check_all_issues left"
       .issues-other-filters.filtered-search-wrapper
         .filtered-search-box
+          - if type != :boards_modal && type != :boards
             = dropdown_tag(content_tag(:i, '', class: 'fa fa-history'),
               options: { wrapper_class: "filtered-search-history-dropdown-wrapper",
               toggle_class: "filtered-search-history-dropdown-toggle-button",