Remove conan package registry feature flag

Remove the conan_package_registry feature flag
for general availability.

changelogs/unreleased/8248-remove-conan-feature-flag.yml

+---
+title: Add support for Conan package management in the package registry
+merge_request: 21152
+author:
+type: added

ee/app/services/packages/conan/search_service.rb

@@ -13,8 +13,6 @@ module Packages
       end
 
       def execute
-        return ServiceResponse.error(message: 'not found', http_status: :not_found) unless feature_available?
-
         ServiceResponse.success(payload: { results: search_results })
       end
 
@@ -38,10 +36,6 @@ module Packages
         sanitized_query
       end
 
-      def feature_available?
-        Feature.enabled?(:conan_package_registry)
-      end
-
       def search_packages(query)
         Packages::ConanPackageFinder.new(current_user, query: query).execute.map(&:conan_recipe)
       end

ee/lib/api/conan_packages.rb

@@ -27,7 +27,6 @@ module API
     CONAN_REVISION_REGEX = Gitlab::Regex.conan_revision_regex
 
     before do
-      not_found! unless Feature.enabled?(:conan_package_registry)
       require_packages_enabled!
 
       # Personal access token will be extracted from Bearer or Basic authorization

ee/spec/requests/api/conan_packages_spec.rb

@@ -31,19 +31,6 @@ describe API::ConanPackages do
   end
 
   describe 'GET /api/v4/packages/conan/v1/ping' do
-    context 'feature flag disabled' do
-      before do
-        stub_feature_flags(conan_package_registry: false)
-      end
-
-      it 'responds with 404 Not Found' do
-        get api('/packages/conan/v1/ping')
-
-        expect(response).to have_gitlab_http_status(:not_found)
-      end
-    end
-
-    context 'feature flag enabled' do
     it 'responds with 401 Unauthorized when no token provided' do
       get api('/packages/conan/v1/ping')
 
@@ -94,7 +81,6 @@ describe API::ConanPackages do
       end
     end
   end
-  end
 
   describe 'GET /api/v4/packages/conan/v1/conans/search' do
     before do

ee/spec/services/packages/conan/search_service_spec.rb

@@ -15,21 +15,6 @@ describe Packages::Conan::SearchService do
   end
 
   describe '#execute' do
-    context 'feature unavailable' do
-      let(:query) { '' }
-
-      before do
-        stub_feature_flags(conan_package_registry: false)
-      end
-
-      it 'responds with 404 not found' do
-        result = subject.execute
-
-        expect(result.http_status).to eq :not_found
-        expect(result.message).to eq('not found')
-      end
-    end
-
     context 'with wildcard' do
       let(:partial_name) { conan_package.name.first[0, 3] }
       let(:query) { "#{partial_name}*" }