remove seccomp from seccomp profile

This can be allowed because it should only restrict more per the seccomp docs, and multiple apps use it today.

Signed-off-by: Jessica Frazelle <acidburn@docker.com>

daemon/execdriver/native/seccomp_default.go

@@ -254,12 +254,6 @@ var defaultSeccompProfile = &configs.Seccomp{
 			Action: configs.Errno,
 			Args:   []*configs.Arg{},
 		},
-		{
-			// meta, deny seccomp
-			Name:   "seccomp",
-			Action: configs.Errno,
-			Args:   []*configs.Arg{},
-		},
 		{
 			// Terrifying syscalls that modify kernel memory and NUMA settings.
 			// They're gated by CAP_SYS_NICE,