Remove database specific JSON types

We already have database agnostic `Type::Json` since #29220.

3 files changed, 0 insertions, 14 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index caa125576c..c15b4a1a05 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -854,9 +854,6 @@ module ActiveRecord
           end
         end
 
-        class MysqlJson < Type::Json # :nodoc:
-        end
-
         class MysqlString < Type::String # :nodoc:
           def serialize(value)
             case value
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
index 0e8888a2b7..6666622c08 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
@@ -8,7 +8,6 @@ require_relative "oid/decimal"
 require_relative "oid/enum"
 require_relative "oid/hstore"
 require_relative "oid/inet"
-require_relative "oid/json"
 require_relative "oid/jsonb"
 require_relative "oid/money"
 require_relative "oid/oid"
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/json.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/json.rb
deleted file mode 100644
index 3c706c27c4..0000000000
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/json.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-module ActiveRecord
-  module ConnectionAdapters
-    module PostgreSQL
-      module OID # :nodoc:
-        class Json < Type::Json # :nodoc:
-        end
-      end
-    end
-  end
-end