Remove unused parameter

app/models/course_data/articles_courses.rb

@@ -205,7 +205,7 @@ def self.update_from_course_revisions(course, revisions)
       { article_id: id, course_id: course.id, first_revision: first_revisions[id] }
     end
 
-    maybe_insert_new_records(course, new_records)
+    maybe_insert_new_records(new_records)
   end
 
   # Given an array of revisions and an array of article ids,
@@ -223,7 +223,7 @@ def self.get_first_revisions(revisions, new_article_ids)
     min_dates
   end
 
-  def self.maybe_insert_new_records(_course, new_records)
+  def self.maybe_insert_new_records(new_records)
     return if new_records.empty?
     # Do this in batches to avoid running the MySQL server out of memory
     new_records.each_slice(5000) do |new_record_slice|