Revert "Apply load balancer properly"

This reverts commit 9f58c475940fb0c0d4b69de0af7787b62a40481f.
This commit is causing TestCreateParallel to be flaky

Signed-off-by: Arko Dasgupta <arko.dasgupta@docker.com>

libnetwork/osl/namespace_linux.go

@@ -681,7 +681,7 @@ func (n *networkNamespace) ApplyOSTweaks(types []SandboxType) {
 	for _, t := range types {
 		switch t {
 		case SandboxTypeLoadBalancer:
-			n.InvokeFunc(func() { kernel.ApplyOSTweaks(loadBalancerConfig) })
+			kernel.ApplyOSTweaks(loadBalancerConfig)
 		}
 	}
 }