cleanup3

app/controllers/exercises_controller.rb

@@ -64,16 +64,8 @@ class ExercisesController < ApplicationController
   end
 
   def edit
-    redirect_to(@exercise, alert: t('exercises.implement.no_files')) unless @exercise.files.visible.exists?
-    @submission = current_user.submissions.where(exercise_id: @exercise.id).order('created_at DESC').first
     @files = (@submission ? @submission.collect_files : @exercise.files).select(&:visible).sort_by(&:name_with_extension)
     @paths = collect_paths(@files)
-
-    if current_user.respond_to? :external_id
-      @user_id = current_user.external_id
-    else
-      @user_id = current_user.id
-    end
   end
 
   def import_proforma_xml