Suppress RuboCop's offense

This commit suppresses the following RuboCop's offense:

```console
$ bundle exec rubocop
(snip)

lib/rubocop/cop/rails/eager_evaluation_log_message.rb:48:23:
C: [Correctable] Style/RedundantFormat: Use MSG directly instead of format.
            message = format(MSG)
                      ^^^^^^^^^^^

301 files inspected, 1 offense detected, 1 offense autocorrectable
```

Author: koic

lib/rubocop/cop/rails/eager_evaluation_log_message.rb

@@ -45,12 +45,10 @@ def on_send(node)
           return if node.parent&.block_type?
 
           interpolated_string_passed_to_debug(node) do |arguments|
-            message = format(MSG)
-
             range = replacement_range(node)
             replacement = replacement_source(node, arguments)
 
-            add_offense(range, message: message) do |corrector|
+            add_offense(range) do |corrector|
               corrector.replace(range, replacement)
             end
           end