Remove unused `pk_and_sequence_for` in AbstractMysqlAdapter

`pk_and_sequence_for` is implemented for PG and MySQL adapters (not
implemented for Sqlite3 adapter). But MySQL adapters are not using
`pk_and_sequence_for` already.

1 files changed, 0 insertions, 24 deletions

diff --git a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
index 29573d8e0d..d2ce48fc00 100644
--- a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
@@ -65,30 +65,6 @@ module ActiveRecord
         end
       end
 
-      def test_pk_and_sequence_for
-        with_example_table do
-          pk, seq = @conn.pk_and_sequence_for('ex')
-          assert_equal 'id', pk
-          assert_equal @conn.default_sequence_name('ex', 'id'), seq
-        end
-      end
-
-      def test_pk_and_sequence_for_with_non_standard_primary_key
-        with_example_table '`code` INT auto_increment, PRIMARY KEY (`code`)' do
-          pk, seq = @conn.pk_and_sequence_for('ex')
-          assert_equal 'code', pk
-          assert_equal @conn.default_sequence_name('ex', 'code'), seq
-        end
-      end
-
-      def test_pk_and_sequence_for_with_custom_index_type_pk
-        with_example_table '`id` INT auto_increment, PRIMARY KEY USING BTREE (`id`)' do
-          pk, seq = @conn.pk_and_sequence_for('ex')
-          assert_equal 'id', pk
-          assert_equal @conn.default_sequence_name('ex', 'id'), seq
-        end
-      end
-
       def test_composite_primary_key
         with_example_table '`id` INT, `number` INT, foo INT, PRIMARY KEY (`id`, `number`)' do
           assert_nil @conn.primary_key('ex')