Revert "ovn-controller: race between binding-run and patch-run for localnet ports"

This reverts commit 3a83007a76bbf05144cee1fda7ad81c1c717dca7.  It's really
nonobvious from the code why the condition added by that commit makes sense.
The new condition should not be necessary now that binding_run() always keeps
track of the local datapaths, since commit 7c040135cf351 (binding: Track local
datapaths even when no transaction is possible).

CC: Ramu Ramamurthy <ramu.ramamurthy@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Russell Bryant <russell@ovn.org>