Remove deprecation for duplicated query annotations

They are now ignored by the framework.

Author: rafaelfranca

activerecord/lib/active_record/relation/query_methods.rb

@@ -1339,14 +1339,6 @@ def build_arel(aliases = nil)
         unless annotate_values.empty?
           annotates = annotate_values
           annotates = annotates.uniq if annotates.size > 1
-          unless annotates == annotate_values
-            ActiveSupport::Deprecation.warn(<<-MSG.squish)
-              Duplicated query annotations are no longer shown in queries in Rails 7.0.
-              To migrate to Rails 7.0's behavior, use `uniq!(:annotate)` to deduplicate query annotations
-              (`#{klass.name&.tableize || klass.table_name}.uniq!(:annotate)`).
-            MSG
-            annotates = annotate_values
-          end
           arel.comment(*annotates)
         end
 

activerecord/test/cases/relation/merging_test.rb

@@ -374,25 +374,14 @@ def test_merging_duplicated_annotations
       posts.merge(posts).uniq!(:annotate).to_a
     end
 
-    message = <<-MSG.squish
-      Duplicated query annotations are no longer shown in queries in Rails 7.0.
-      To migrate to Rails 7.0's behavior, use `uniq!(:annotate)` to deduplicate query annotations
-      (`posts.uniq!(:annotate)`).
-    MSG
-    assert_deprecated(message) do
-      assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* foo \*/ /\* foo \*/\z}) do
-        posts.merge(posts).to_a
-      end
+    assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* foo \*/\z}) do
+      posts.merge(posts).to_a
     end
-    assert_deprecated(message) do
-      assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* foo \*/ /\* bar \*/ /\* foo \*/\z}) do
-        Post.annotate("foo").merge(Post.annotate("bar")).merge(posts).to_a
-      end
+    assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* foo \*/ /\* bar \*/\z}) do
+      Post.annotate("foo").merge(Post.annotate("bar")).merge(posts).to_a
     end
-    assert_deprecated(message) do
-      assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* bar \*/ /\* foo \*/ /\* foo \*/\z}) do
-        Post.annotate("bar").merge(Post.annotate("foo")).merge(posts).to_a
-      end
+    assert_sql(%r{FROM #{Regexp.escape(Post.quoted_table_name)} /\* bar \*/ /\* foo \*/\z}) do
+      Post.annotate("bar").merge(Post.annotate("foo")).merge(posts).to_a
     end
   end
 end