diff --git a/lib/mongo/connection.rb b/lib/mongo/connection.rb
index a6a3291..b937b43 100644
--- a/lib/mongo/connection.rb
+++ b/lib/mongo/connection.rb
@@ -381,14 +381,6 @@ module Mongo
       @slave_ok
     end
 
-    def get_socket_from_thread_local
-      Thread.current[:socket_map] ||= {}
-      Thread.current[:socket_map][self] ||= {}
-      Thread.current[:socket_map][self][:writer] ||= checkout_writer
-      Thread.current[:socket_map][self][:reader] =
-        Thread.current[:socket_map][self][:writer]
-    end
-
     # Create a new socket and attempt to connect to master.
     # If successful, sets host and port to master and returns the socket.
     #