Merge branch 'revert-2f0a0761' into 'master'

Revert "Merge branch 'feature/git-v2-flag' into 'master'"

See merge request gitlab-org/gitlab-ce!22134

lib/gitlab/gitaly_client.rb

@@ -220,7 +220,7 @@ module Gitlab
       result
     end
 
-    SERVER_FEATURE_FLAGS = %w[gogit_findcommit git_v2].freeze
+    SERVER_FEATURE_FLAGS = %w[gogit_findcommit].freeze
 
     def self.server_feature_flags
       SERVER_FEATURE_FLAGS.map do |f|