So you are running VMware ESXi 5 and enabled remote and local shell access.
What you have found by doing this is a nice warning screen like the screenshot below waiting for you each and every time you are logged in.

Getting rid of this is simple.

Go to your host, click the configuration tab, click “advanced settings”, go to UserVars” and scroll all the way down to “UserVars.SuppressShellWarning” change the value from 0 to 1.