Revert "SUNRPC: Ensure gss-proxy connects on setup"

This reverts commit 892de36f.

The gssproxy server is unresponsive when it calls into the kernel to
start the upcall service, so it will not reply to our RPC ping at all.

Reported-by: "J.Bruce Fields" <bfields@fieldses.org>
Fixes: 892de36f ("SUNRPC: Ensure gss-proxy connects on setup")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>