Remove include_lfs_blobs_in_archive feature flag

This feature flag has been enabled by the default since GitLab 13.5, so
it's time to remove it.

Changelog: changed

config/feature_flags/development/include_lfs_blobs_in_archive.yml

----
-name: include_lfs_blobs_in_archive
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/44116
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/268409
-milestone: '13.5'
-type: development
-group: group::source code
-default_enabled: true

doc/topics/git/lfs/index.md

@@ -114,11 +114,9 @@ See the documentation on [File Locking](../../../user/project/file_lock.md).
 ## LFS objects in project archives
 
 > - Support for including Git LFS blobs inside [project source downloads](../../../user/project/repository/index.md) was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/15079) in GitLab 13.5.
-> - [Deployed behind a feature flag](../../../user/feature_flags.md), disabled by default.
 > - [Enabled by default](https://gitlab.com/gitlab-org/gitlab/-/issues/268409) in GitLab 13.6.
 > - Enabled on GitLab.com.
 > - Recommended for production use.
-> - For GitLab self-managed instances, GitLab administrators can opt to [disable it](#enable-or-disable-lfs-objects-in-project-archives).
 
 WARNING:
 This feature might not be available to you. Check the **version history** note above for details.
@@ -134,31 +132,11 @@ oid sha256:3ea5dd307f195f449f0e08234183b82e92c3d5f4cff11c2a6bb014f9e0de12aa
 size 177735
 ```
 
-Starting with GitLab 13.5, these pointers are converted to the uploaded
-LFS object if the `include_lfs_blobs_in_archive` feature flag is
-enabled.
+In GitLab version 13.5 and later, these pointers are converted to the uploaded
+LFS object.
 
 Technical details about how this works can be found in the [development documentation for LFS](../../../development/lfs.md#including-lfs-blobs-in-project-archives).
 
-### Enable or disable LFS objects in project archives
-
-_LFS objects in project archives_ is under development but ready for production use.
-It is deployed behind a feature flag that is **enabled by default**.
-[GitLab administrators with access to the GitLab Rails console](../../../administration/feature_flags.md)
-can opt to disable it.
-
-To enable it:
-
-```ruby
-Feature.enable(:include_lfs_blobs_in_archive)
-```
-
-To disable it:
-
-```ruby
-Feature.disable(:include_lfs_blobs_in_archive)
-```
-
 ## Troubleshooting
 
 ### error: Repository or object not found

lib/gitlab/git/repository.rb

@@ -302,8 +302,6 @@ module Gitlab
       private :archive_file_path
 
       def archive_version_path
-        return '' unless Feature.enabled?(:include_lfs_blobs_in_archive, default_enabled: true)
-
         '@v2'
       end
       private :archive_version_path

lib/gitlab/workhorse.rb

@@ -270,7 +270,7 @@ module Gitlab
               prefix: metadata['ArchivePrefix'],
               format: format,
               path: path.presence || "",
-              include_lfs_blobs: Feature.enabled?(:include_lfs_blobs_in_archive, default_enabled: true)
+              include_lfs_blobs: true
             ).to_proto
           )
         }

spec/lib/gitlab/git/repository_spec.rb

@@ -133,32 +133,10 @@ RSpec.describe Gitlab::Git::Repository, :seed_helper do
       expect(metadata['ArchivePrefix']).to eq(expected_prefix)
     end
 
-    context 'when :include_lfs_blobs_in_archive feature flag is disabled' do
-      let(:expected_path) { File.join(storage_path, cache_key, expected_filename) }
+    it 'sets ArchivePath to the expected globally-unique path' do
+      expect(expected_path).to include(File.join(repository.gl_repository, SeedRepo::LastCommit::ID))
 
-      before do
-        stub_feature_flags(include_lfs_blobs_in_archive: false)
-      end
-
-      it 'sets ArchivePath to the expected globally-unique path' do
-        # This is really important from a security perspective. Think carefully
-        # before changing it: https://gitlab.com/gitlab-org/gitlab-foss/issues/45689
-        expect(expected_path).to include(File.join(repository.gl_repository, SeedRepo::LastCommit::ID))
-
-        expect(metadata['ArchivePath']).to eq(expected_path)
-      end
-    end
-
-    context 'when :include_lfs_blobs_in_archive feature flag is enabled' do
-      before do
-        stub_feature_flags(include_lfs_blobs_in_archive: true)
-      end
-
-      it 'sets ArchivePath to the expected globally-unique path' do
-        expect(expected_path).to include(File.join(repository.gl_repository, SeedRepo::LastCommit::ID))
-
-        expect(metadata['ArchivePath']).to eq(expected_path)
-      end
+      expect(metadata['ArchivePath']).to eq(expected_path)
     end
 
     context 'path is set' do

spec/lib/gitlab/workhorse_spec.rb

@@ -60,37 +60,6 @@ RSpec.describe Gitlab::Workhorse do
       }.deep_stringify_keys)
     end
 
-    context 'when include_lfs_blobs_in_archive is disabled' do
-      before do
-        stub_feature_flags(include_lfs_blobs_in_archive: false)
-      end
-
-      it 'sets include_lfs_blobs to false' do
-        key, command, params = decode_workhorse_header(subject)
-
-        expect(key).to eq('Gitlab-Workhorse-Send-Data')
-        expect(command).to eq('git-archive')
-        expect(params).to eq({
-          'GitalyServer' => {
-            features: { 'gitaly-feature-enforce-requests-limits' => 'true' },
-            address: Gitlab::GitalyClient.address(project.repository_storage),
-            token: Gitlab::GitalyClient.token(project.repository_storage)
-          },
-          'ArchivePath' => metadata['ArchivePath'],
-          'GetArchiveRequest' => Base64.encode64(
-            Gitaly::GetArchiveRequest.new(
-              repository: repository.gitaly_repository,
-              commit_id: metadata['CommitId'],
-              prefix: metadata['ArchivePrefix'],
-              format: Gitaly::GetArchiveRequest::Format::ZIP,
-              path: path,
-              include_lfs_blobs: false
-            ).to_proto
-          )
-        }.deep_stringify_keys)
-      end
-    end
-
     context 'when archive caching is disabled' do
       let(:cache_disabled) { true }