Rubocop fixes

lib/bitbucket/page.rb

@@ -29,7 +29,7 @@ module Bitbucket
     end
 
     def representation_class(type)
-      class_name = Bitbucket::Representation.const_get(type.to_s.camelize)
+      Bitbucket::Representation.const_get(type.to_s.camelize)
     end
   end
 end

lib/gitlab/bitbucket_import/importer.rb

@@ -139,7 +139,7 @@ module Gitlab
               line_code: line_code_map.fetch(comment.iid),
               type: 'LegacyDiffNote')
 
-            note = merge_request.notes.create!(attributes)
+            merge_request.notes.create!(attributes)
           rescue ActiveRecord::RecordInvalid => e
             Rails.log.error("Bitbucket importer ERROR: Invalid pull request comment #{e.message}")
             nil