Remove old migration tasks

lib/tasks/migrate/migrate_global_projects.rake

-desc "GITLAB | Migrate Global Projects to Namespaces"
-task migrate_global_projects: :environment do
-  found = Project.where(namespace_id: nil).count
-  if found > 0
-    puts "Global namespace is deprecated. We found #{found} projects stored in global namespace".yellow
-    puts "You may abort this task and move them to group/user namespaces manually."
-    puts "If you want us to move this projects under owner namespaces then continue"
-    ask_to_continue
-  else
-    puts "No global projects found. Proceed with update.".green
-  end
-
-  Project.where(namespace_id: nil).find_each(batch_size: 20) do |project|
-    begin
-      project.transfer(project.owner.namespace)
-      print '.'
-    rescue => ex
-      puts ex.message
-      print 'F'
-    end
-  end
-end
-

lib/tasks/migrate/migrate_groups.rake

-desc "GITLAB | Migrate Groups to match v6.0"
-task migrate_groups: :environment do
-  puts "This will add group owners to group membership"
-  ask_to_continue
-
-  Group.find_each(batch_size: 20) do |group|
-    begin
-      group.send :add_owner
-      print '.'
-    rescue => ex
-      puts ex.message
-      print 'F'
-    end
-  end
-end
-

lib/tasks/migrate/migrate_inline_notes.rake

-desc "GITLAB | Migrate inline notes"
-task migrate_inline_notes: :environment do
-  Note.where('line_code IS NOT NULL').find_each(batch_size: 100) do |note|
-    begin
-      note.set_diff
-      if note.save
-        print '.'
-      else
-        print 'F'
-      end
-    rescue
-      print 'F'
-    end
-  end
-end
-

lib/tasks/migrate/migrate_keys.rake

-desc "GITLAB | Migrate SSH Keys"
-task migrate_keys: :environment do
-  puts "This will add fingerprint to ssh keys in db"
-  puts "If you have duplicate keys https://github.com/gitlabhq/gitlabhq/issues/4453 all but the first will be deleted".yellow
-  ask_to_continue
-
-  Key.find_each(batch_size: 20) do |key|
-    if key.valid? && key.save
-      print '.'
-    elsif key.fingerprint.present?
-      puts "\nDeleting #{key.inspect}".yellow
-      key.destroy
-    else
-      print 'F'
-    end
-  end
-  print "\n"
-end
-
-

lib/tasks/migrate/migrate_milestones.rake

-desc "GITLAB | Migrate Milestones"
-task migrate_milestones: :environment do
-  Milestone.where(state: nil).update_all(state: 'active')
-end

lib/tasks/migrate/migrate_mr.rake

-# This taks will reload commits/diff for all merge requests
-desc "GITLAB | Migrate Merge Requests"
-task migrate_merge_requests: :environment do
-  puts "Since 5.1 old merge request serialization logic was replaced with a better one."
-  puts "It makes old merge request diff invalid for GitLab 5.1+"
-  puts "* * *"
-  puts "This will rebuild commits/diffs info for existing merge requests."
-  puts "You will lose merge request diff if its already merged."
-  ask_to_continue
-
-  MergeRequest.find_each(batch_size: 20) do |mr|
-    mr.st_commits = []
-    mr.save
-    mr.reload_code
-    print '.'
-  end
-end
-

lib/tasks/migrate/migrate_note_linecode.rake

-desc "GITLAB | Migrate Note LineCode"
-task migrate_note_linecode: :environment do
-  Note.inline.each do |note|
-    index = note.diff_file_index
-    if index =~ /^\d{1,10}$/ # is number. not hash.
-      hash = Digest::SHA1.hexdigest(note.noteable.diffs[index.to_i].new_path)
-      new_line_code = note.line_code.sub(index, hash)
-      note.update_column :line_code, new_line_code
-      print '.'
-    end
-  end
-end
-