Clean up Gitaly Wiki RPCs in Rails
A part of &2381 (closed)
After all traffic are migrated to normal repository RPCs. We can remove all the code in Rails code case leading to the Wiki* RPC calls. Along the way, we'll also need to refactor some classes served as data transformation between Gitaly and GitLab rails, such as lib/gitlab/git/wiki.rb
and lib/gitlab/git/wiki_page.rb
in particular.
This issue targets %15.6, as we could not meet %15.5 milestone.
Edited by Quang-Minh Nguyen