Revert "Create mandatory /etc/nodepool for later use"

At first glance, this may be causing a hang on the remote side that is
causing the nodepool test to hang. We didn't notice it because the test
was otherwise broken.

This reverts commit 44ee08c2d7.

Change-Id: Iaef2a140e33fc48f8bfa8ff4769eded37ce152c6

nodepool/nodepool.py

@@ -625,9 +625,7 @@ class NodeLauncher(threading.Thread):
             if not host:
                 raise Exception("Unable to log in via SSH")
 
-            host.ssh("Create config dir", "sudo mkdir -p /etc/nodepool")
-            host.ssh("Change config dir owner",
-                     "sudo chown %s -R /etc/nodepool" % self.image.username)
+            host.ssh("test for config dir", "ls /etc/nodepool")
 
             ftp = host.client.open_sftp()