Remove unused `Column#coder`

It appears this property was added, but never actually used. It would be
broken if it were, as it only type casts one way.

1 files changed, 0 insertions, 20 deletions

diff --git a/activerecord/test/cases/column_definition_test.rb b/activerecord/test/cases/column_definition_test.rb
index 45e48900ee..bcfd66b4bf 100644
--- a/activerecord/test/cases/column_definition_test.rb
+++ b/activerecord/test/cases/column_definition_test.rb
@@ -11,26 +11,6 @@ module ActiveRecord
         @viz = @adapter.schema_creation
       end
 
-      def test_can_set_coder
-        column = Column.new("title", nil, Type::String.new, "varchar(20)")
-        column.coder = YAML
-        assert_equal YAML, column.coder
-      end
-
-      def test_encoded?
-        column = Column.new("title", nil, Type::String.new, "varchar(20)")
-        assert !column.encoded?
-
-        column.coder = YAML
-        assert column.encoded?
-      end
-
-      def test_type_case_coded_column
-        column = Column.new("title", nil, Type::String.new, "varchar(20)")
-        column.coder = YAML
-        assert_equal "hello", column.type_cast("--- hello")
-      end
-
       # Avoid column definitions in create table statements like:
       # `title` varchar(255) DEFAULT NULL
       def test_should_not_include_default_clause_when_default_is_null