Move mergablility check to Gitaly

Closes https://gitlab.com/gitlab-org/gitaly/issues/889

1 files changed, 2 insertions, 15 deletions

diff --git a/lib/gitlab/git/repository.rb b/lib/gitlab/git/repository.rb
index ab0e6e33db7..7af40e62395 100644
--- a/lib/gitlab/git/repository.rb
+++ b/lib/gitlab/git/repository.rb
@@ -1413,13 +1413,8 @@ module Gitlab
       end
 
       def can_be_merged?(source_sha, target_branch)
-        gitaly_migrate(:can_be_merged) do |is_enabled|
-          if is_enabled
-            gitaly_can_be_merged?(source_sha, find_branch(target_branch, true).target)
-          else
-            rugged_can_be_merged?(source_sha, target_branch)
-          end
-        end
+        target_sha = find_branch(target_branch, true).target
+        !gitaly_conflicts_client(source_sha, target_sha).conflicts?
       end
 
       def search_files_by_name(query, ref)
@@ -2236,14 +2231,6 @@ module Gitlab
         run_git(['fetch', remote_name], env: env).last.zero?
       end
 
-      def gitaly_can_be_merged?(their_commit, our_commit)
-        !gitaly_conflicts_client(our_commit, their_commit).conflicts?
-      end
-
-      def rugged_can_be_merged?(their_commit, our_commit)
-        !rugged.merge_commits(our_commit, their_commit).conflicts?
-      end
-
       def gitlab_projects_error
         raise CommandError, @gitlab_projects.output
       end