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-rw-r--r--activerecord/lib/active_record/validations/uniqueness.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb
index aa2794f120..edc1325b25 100644
--- a/activerecord/lib/active_record/validations/uniqueness.rb
+++ b/activerecord/lib/active_record/validations/uniqueness.rb
@@ -231,7 +231,6 @@ module ActiveRecord
#
# The following bundled adapters throw the ActiveRecord::RecordNotUnique exception:
#
- # * ActiveRecord::ConnectionAdapters::MysqlAdapter.
# * ActiveRecord::ConnectionAdapters::Mysql2Adapter.
# * ActiveRecord::ConnectionAdapters::SQLite3Adapter.
# * ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.