diff --git a/app/assets/.DS_Store b/app/assets/.DS_Store
deleted file mode 100644
index 29fe5375..00000000
Binary files a/app/assets/.DS_Store and /dev/null differ
diff --git a/app/assets/javascripts/.DS_Store b/app/assets/javascripts/.DS_Store
deleted file mode 100644
index 5008ddfc..00000000
Binary files a/app/assets/javascripts/.DS_Store and /dev/null differ
diff --git a/app/views/application/_navigation.html.slim b/app/views/application/_navigation.html.slim
index 8aa289d3..b9663d3f 100644
--- a/app/views/application/_navigation.html.slim
+++ b/app/views/application/_navigation.html.slim
@@ -8,7 +8,7 @@
         - if current_user.admin?
           li = link_to(t('breadcrumbs.dashboard.show'), admin_dashboard_path)
           li.divider
-        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, FileTemplate, InternalUser, Submission].sort_by { |model| model.model_name.human(count: 2) }
+        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, FileTemplate, InternalUser].sort_by { |model| model.model_name.human(count: 2) }
         - models.each do |model|
           - if policy(model).index?
             li = link_to(model.model_name.human(count: 2), send(:"#{model.model_name.collection}_path"))