Fix rubocop offenses after bundle update

app/controllers/request_for_comments_controller.rb

@@ -141,7 +141,6 @@ class RequestForCommentsController < ApplicationController
     @request_for_comment = RequestForComment.find(params[:id])
   end
 
-  # Never trust parameters from the scary internet, only allow the white list through.
   def request_for_comment_params
     # The study_group_id might not be present in the session (e.g. for internal users), resulting in session[:study_group_id] = nil which is intended.
     params.require(:request_for_comment).permit(:exercise_id, :file_id, :question, :requested_at, :solved, :submission_id).merge(