Merge branch 'fix-pre-receive' into 'master'

Fix git push by removing a bad require in the pre-receive hook

Closes gitlab-qa#158

See merge request gitlab-org/gitlab-shell!183

CHANGELOG

+v6.0.1
+  - Fix git push by removing a bad require in the pre-receive hook (!183)
+
 v6.0.0
   - Remove bin/gitlab_projects (!180)
   - Remove direct redis integration (!181)

VERSION

-6.0.0
+6.0.1

hooks/pre-receive

@@ -16,7 +16,6 @@ def increase_reference_counter(gl_repository, repo_path)
 end
 
 require_relative '../lib/gitlab_custom_hook'
-require_relative '../lib/gitlab_reference_counter'
 require_relative '../lib/gitlab_access'
 require_relative '../lib/gitlab_net'