Remove unnecessary project limit argument from group projects page

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/groups/_projects.html.haml

@@ -8,4 +8,4 @@
           = icon('plus')
           New Project
 
-= render 'shared/projects/list', projects: @projects, projects_limit: 20, stars: false, skip_namespace: true
+= render 'shared/projects/list', projects: @projects, stars: false, skip_namespace: true