removed OpenProject core version related switch

in issue boxes controller
Check is not needed anymore see: 6504ddc744

app/controllers/issue_boxes_controller.rb

@@ -52,13 +52,7 @@ class IssueBoxesController < IssuesController
   private
 
   def load_journals
-    if Redmine::VERSION::MAJOR >= 2
-      @journals = @issue.journals.find(:all, :include => [:user], :order => "#{Journal.table_name}.created_at ASC")
-      @journals.reverse! if User.current.wants_comments_in_reverse_order?
-    else
-      @journals = @issue.journals.find(:all, :include => [:user, :details], :order => "#{Journal.table_name}.created_on ASC")
-      @journals.each_with_index {|j,i| j.indice = i+1}
-      @journals.reverse! if User.current.wants_comments_in_reverse_order?
-    end
+    @journals = @issue.journals.find(:all, :include => [:user], :order => "#{Journal.table_name}.created_at ASC")
+    @journals.reverse! if User.current.wants_comments_in_reverse_order?
   end
 end