Remove epic filtered search bar from issue boards

app/assets/javascripts/boards/index.js

@@ -162,15 +162,9 @@ export default () => {
       eventHub.$off('initialBoardLoad', this.initialBoardLoad);
     },
     mounted() {
-      if (!gon.features?.boardsFilteredSearch) {
-        this.filterManager = new FilteredSearchBoards(
-          boardsStore.filter,
-          true,
-          boardsStore.cantEdit,
-        );
+      this.filterManager = new FilteredSearchBoards(boardsStore.filter, true, boardsStore.cantEdit);
 
       this.filterManager.setup();
-      }
 
       this.performSearch();
 

app/controllers/groups/boards_controller.rb

@@ -9,7 +9,6 @@ class Groups::BoardsController < Groups::ApplicationController
   before_action :assign_endpoint_vars
   before_action do
     push_frontend_feature_flag(:graphql_board_lists, group, default_enabled: false)
-    push_frontend_feature_flag(:boards_filtered_search, group)
     push_frontend_feature_flag(:swimlanes_buffered_rendering, group, default_enabled: :yaml)
   end
 

spec/frontend/fixtures/issues.rb

@@ -16,8 +16,6 @@ RSpec.describe Projects::IssuesController, '(JavaScript fixtures)', type: :contr
   end
 
   before do
-    stub_feature_flags(boards_filtered_search: false)
-
     project.add_maintainer(user)
     sign_in(user)
   end

spec/spec_helper.rb

@@ -266,12 +266,6 @@ RSpec.configure do |config|
 
       stub_feature_flags(unified_diff_components: false)
 
-      # Disable this feature flag as we iterate and
-      # refactor filtered search to use gitlab ui
-      # components to meet feature parody. More details found
-      # https://gitlab.com/groups/gitlab-org/-/epics/5501
-      stub_feature_flags(boards_filtered_search: false)
-
       # The following `vue_issues_list` stub can be removed once the
       # Vue issues page has feature parity with the current Haml page
       stub_feature_flags(vue_issues_list: false)