Merge pull request #24034 from kamipo/remove_outdated_comment

Remove outdated comment [ci skip]

activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb

@@ -214,7 +214,6 @@ def indexes(table_name, name = nil)
 
         # Returns the list of all column definitions for a table.
         def columns(table_name)
-          # Limit, precision, and scale are all handled by the superclass.
           column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod, collation|
             oid = oid.to_i
             fmod = fmod.to_i