Remove an example which contradicts other guidelines

aeroastro · aeroastro · commit c4ca23952803 · 2023-09-06T23:59:33.000+09:00
diff --git a/README.adoc b/README.adoc
@@ -1866,11 +1866,9 @@ Use an instance of `ActiveSupport::Duration` as a receiver to calculate relative
 ----
 # bad - It's confusing to read
 created_at.since(1.minute)
-expiration_date.ago(3.days)
 
 # good
 1.minute.since(created_at)
-3.days.ago(expiration_date)
 ----
 
 == Bundler
