chore(graph/graph): remove dead code

This code was introduced with commented out sections. Just delete them.

Original commit: 18fc707fdf06aeb50fa5250f59f0ef4597d7cf73

Docker-DCO-1.1-Signed-off-by: Brandon Philips <brandon.philips@coreos.com> (github: philips)
Merge pull request #5855 from philips/remove-dead-code

chore(graph/graph): remove dead code
Fix races on TagStore accessing

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Fix race on shutting down

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Fix races in set/get currentInterfaces in networkdriver

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Fix race in native driver on activeContainers usage

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Goroutine-safe daemon.containers

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Atomically increment sequence in pkg/netlink

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Merge pull request #6118 from LK4D4/fix_race_conditions

Fix race conditions