# File lib/active_record/connection_adapters/abstract/connection_specification.rb, line 131
    def self.remove_connection(klass=self)
      conn = @@defined_connections[klass.name]
      @@defined_connections.delete(klass.name)
      @@connection_cache[Thread.current.object_id].delete(klass.name)
      active_connections.delete(klass.name)
      @connection = nil
      conn.config if conn
    end