Remove load_add_signup_topics()

1. Because it doesn't provide any useful param for other methods
2. And it does nothing for add_signup_topics()

app/controllers/sign_up_sheet_controller.rb

@@ -137,25 +137,9 @@ def load_all_selected_topics
   # Contains links that let an admin or Instructor edit, delete, view enrolled/waitlisted members for each topic
   # Also contains links to delete topics and modify the deadlines for individual topics. Staggered means that different topics can have different deadlines.
   def add_signup_topics
-    load_add_signup_topics(params[:id])
     SignUpSheet.add_signup_topic(params[:id])
   end
 
-  # retrieves all the data associated with the given assignment. Includes all topics,
-  def load_add_signup_topics(assignment_id)
-    @id = assignment_id
-    @sign_up_topics = SignUpTopic.where('assignment_id = ?', assignment_id)
-    @slots_filled = SignUpTopic.find_slots_filled(assignment_id)
-    @slots_waitlisted = SignUpTopic.find_slots_waitlisted(assignment_id)
-
-    @assignment = Assignment.find(assignment_id)
-    # ACS Removed the if condition (and corresponding else) which differentiate assignments as team and individual assignments
-    # to treat all assignments as team assignments
-    # Though called participants, @participants are actually records in signed_up_teams table, which
-    # is a mapping table between teams and topics (waitlisted recorded are also counted)
-    @participants = SignedUpTeam.find_team_participants(assignment_id, session[:ip])
-  end
-
   def set_values_for_new_topic
     @sign_up_topic = SignUpTopic.new
     @sign_up_topic.topic_identifier = params[:topic][:topic_identifier]