Remove unnecessary parens

app/views/projects/environments/show.html.haml

app/views/projects/graphs/ci.html.haml

app/views/projects/graphs/commits.html.haml

app/views/projects/graphs/languages.html.haml

app/views/projects/graphs/show.html.haml

app/views/projects/issues/index.html.haml

app/views/projects/labels/index.html.haml

app/views/projects/merge_requests/index.html.haml

app/views/projects/milestones/index.html.haml

app/views/projects/network/_head.html.haml

app/views/projects/network/show.html.haml

app/views/projects/pipelines/index.html.haml

app/views/projects/show.html.haml

app/views/projects/tags/index.html.haml

app/views/projects/tree/show.html.haml

app/views/projects/wikis/_new.html.haml

app/views/projects/wikis/edit.html.haml

app/views/projects/wikis/git_access.html.haml

app/views/projects/wikis/history.html.haml

app/views/projects/wikis/pages.html.haml