Moves another RPC to mandatory

This specific one isn't used on most machines, therefor low risk.

Closes https://gitlab.com/gitlab-org/gitaly/issues/944

app/models/repository.rb

@@ -21,7 +21,7 @@ class Repository
   attr_accessor :full_path, :disk_path, :project, :is_wiki
 
   delegate :ref_name_for_sha, to: :raw_repository
-  delegate :bundle_to_disk, :create_from_bundle, to: :raw_repository
+  delegate :bundle_to_disk, to: :raw_repository
 
   CreateTreeError = Class.new(StandardError)
 

lib/gitlab/git/repository.rb

@@ -1158,16 +1158,7 @@ module Gitlab
       end
 
       def create_from_bundle(bundle_path)
-        gitaly_migrate(:create_repo_from_bundle) do |is_enabled|
-          if is_enabled
         gitaly_repository_client.create_from_bundle(bundle_path)
-          else
-            run_git!(%W(clone --bare -- #{bundle_path} #{path}), chdir: nil)
-            self.class.create_hooks(path, File.expand_path(Gitlab.config.gitlab_shell.hooks_path))
-          end
-        end
-
-        true
       end
 
       def create_from_snapshot(url, auth)

spec/lib/gitlab/git/repository_spec.rb

@@ -2160,13 +2160,12 @@ describe Gitlab::Git::Repository, seed_helper: true do
   end
 
   describe '#create_from_bundle' do
-    shared_examples 'creating repo from bundle' do
     let(:bundle_path) { File.join(Dir.tmpdir, "repo-#{SecureRandom.hex}.bundle") }
     let(:project) { create(:project) }
     let(:imported_repo) { project.repository.raw }
 
     before do
-        expect(repository.bundle_to_disk(bundle_path)).to be true
+      expect(repository.bundle_to_disk(bundle_path)).to be_truthy
     end
 
     after do
@@ -2178,7 +2177,7 @@ describe Gitlab::Git::Repository, seed_helper: true do
 
       result = imported_repo.create_from_bundle(bundle_path)
 
-        expect(result).to be true
+      expect(result).to be_truthy
       expect(imported_repo).to exist
       expect { imported_repo.fsck }.not_to raise_exception
     end
@@ -2191,15 +2190,6 @@ describe Gitlab::Git::Repository, seed_helper: true do
     end
   end
 
-    context 'when Gitaly create_repo_from_bundle feature is enabled' do
-      it_behaves_like 'creating repo from bundle'
-    end
-
-    context 'when Gitaly create_repo_from_bundle feature is disabled', :disable_gitaly do
-      it_behaves_like 'creating repo from bundle'
-    end
-  end
-
   describe '#checksum' do
     it 'calculates the checksum for non-empty repo' do
       expect(repository.checksum).to eq '4be7d24ce7e8d845502d599b72d567d23e6a40c0'

spec/lib/gitlab/import_export/repo_restorer_spec.rb

@@ -30,7 +30,7 @@ describe Gitlab::ImportExport::RepoRestorer do
     end
 
     it 'restores the repo successfully' do
-      expect(restorer.restore).to be true
+      expect(restorer.restore).to be_truthy
     end
 
     it 'has the webhooks' do