Add :nodoc: to `StatementPool` which is internal used [ci skip]

In #30510, `StatementPool` in `AbstractMysqlAdapter` was hidden in the
doc. But that class is also had in sqlite3 and postgresql adapters and
the base class is :nodoc: class.

2 files changed, 2 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 7b27f6b7a0..27011bfe92 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -166,7 +166,7 @@ module ActiveRecord
         { concurrently: "CONCURRENTLY" }
       end
 
-      class StatementPool < ConnectionAdapters::StatementPool
+      class StatementPool < ConnectionAdapters::StatementPool # :nodoc:
         def initialize(connection, max)
           super(max)
           @connection = connection
@@ -182,7 +182,6 @@ module ActiveRecord
         end
 
         private
-
           def dealloc(key)
             @connection.query "DEALLOCATE #{key}" if connection_active?
           rescue PG::Error
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
index 670afa3684..daece2bffd 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
@@ -90,9 +90,8 @@ module ActiveRecord
       #   Rails.application.config.active_record.sqlite3.represent_boolean_as_integer = true
       class_attribute :represent_boolean_as_integer, default: false
 
-      class StatementPool < ConnectionAdapters::StatementPool
+      class StatementPool < ConnectionAdapters::StatementPool # :nodoc:
         private
-
           def dealloc(stmt)
             stmt[:stmt].close unless stmt[:stmt].closed?
           end