Revert "AUTH-1941: Adds initial SSH server implementation"

This reverts commit e9c9bf3cbd.

vendor/github.com/creack/pty/pty_openbsd.go

@@ -1,33 +0,0 @@
-package pty
-
-import (
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-func open() (pty, tty *os.File, err error) {
-	/*
-	 * from ptm(4):
-	 * The PTMGET command allocates a free pseudo terminal, changes its
-	 * ownership to the caller, revokes the access privileges for all previous
-	 * users, opens the file descriptors for the pty and tty devices and
-	 * returns them to the caller in struct ptmget.
-	 */
-
-	p, err := os.OpenFile("/dev/ptm", os.O_RDWR|syscall.O_CLOEXEC, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-	defer p.Close()
-
-	var ptm ptmget
-	if err := ioctl(p.Fd(), uintptr(ioctl_PTMGET), uintptr(unsafe.Pointer(&ptm))); err != nil {
-		return nil, nil, err
-	}
-
-	pty = os.NewFile(uintptr(ptm.Cfd), "/dev/ptm")
-	tty = os.NewFile(uintptr(ptm.Sfd), "/dev/ptm")
-
-	return pty, tty, nil
-}