Remove deprecated `#all_connection_pools`

activerecord/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated `#all_connection_pools`.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated `ActiveRecord::ConnectionAdapters::SchemaCache#data_sources`.
 
     *Rafael Mendonça França*

activerecord/lib/active_record/connection_adapters/abstract/connection_handler.rb

@@ -88,14 +88,6 @@ module ActiveRecord
         connection_name_to_pool_manager.keys
       end
 
-      def all_connection_pools
-        ActiveRecord.deprecator.warn(<<-MSG.squish)
-          The `all_connection_pools` method is deprecated in favor of `connection_pool_list`.
-          Call `connection_pool_list(:all)` to get the same behavior as `all_connection_pools`.
-        MSG
-        connection_name_to_pool_manager.values.flat_map { |m| m.pool_configs.map(&:pool) }
-      end
-
       # Returns the pools for a connection handler and  given role. If +:all+ is passed,
       # all pools belonging to the connection handler will be returned.
       def connection_pool_list(role = nil)

activerecord/test/cases/connection_adapters/connection_handlers_multi_db_test.rb

@@ -328,12 +328,6 @@ module ActiveRecord
         end
       end
 
-      def test_all_connection_pools
-        assert_deprecated(ActiveRecord.deprecator) do
-          assert_equal([@rw_pool, @ro_pool], @handler.all_connection_pools)
-        end
-      end
-
       def test_retrieve_connection
         assert @handler.retrieve_connection(@connection_name)
         assert @handler.retrieve_connection(@connection_name, role: :reading)

guides/source/7_2_release_notes.md

@@ -148,6 +148,8 @@ Please refer to the [Changelog][active-record] for detailed changes.
 
 *   Remove deprecated `ActiveRecord::ConnectionAdapters::SchemaCache#data_sources`.
 
+*   Remove deprecated `#all_connection_pools`.
+
 ### Deprecations
 
 *   Deprecate `Rails.application.config.active_record.allow_deprecated_singular_associations_name`