integration: Remove manage-non-available-node test.

It makes integration tests run really slow.

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

test/integration/manage-non-available-node.bats

@@ -1,15 +0,0 @@
-#!/usr/bin/env bats
-
-load vars
-
-@test "managing non-available node should be timed out" {
-
-	#
-	# timeout does not accept a bash function, so hard-coded path is required
-	#
-	run timeout 15s $GOBIN/swarm manage -H 127.0.0.1:2375 nodes://8.8.8.8:2375
-
-	[ "$status" -ne 0 ]
-	[[ ${lines[0]} =~ "Listening for HTTP" ]]
-	[[ ${lines[1]} =~ "ConnectEx tcp: i/o timeout" ]]
-}