Revert "SUNRPC: Ensure we close the socket on EPIPE errors too..."

Revert "SUNRPC: Ensure we close the socket on EPIPE errors too..."

This reverts commit a9ea97e0dfbb0e3e765e4b8791b3e3b746f680a5.
Now that we clear the connected flag when entering TCP_CLOSE_WAIT,
the deadlock described in this commit is no longer possible.
Instead, the resulting call to xs_tcp_shutdown() can interfere
with pending reconnection attempts.

Reported-by: Chris Perl <chris.perl@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
Tested-by: Chris Perl <chris.perl@gmail.com>