tty: recvtty: rm process arg

It is not used since commit 00a0ecf554.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

tty.go

@@ -99,7 +99,7 @@ func (t *tty) initHostConsole() error {
 	return nil
 }
 
-func (t *tty) recvtty(process *libcontainer.Process, socket *os.File) (Err error) {
+func (t *tty) recvtty(socket *os.File) (Err error) {
 	f, err := utils.RecvFd(socket)
 	if err != nil {
 		return err

utils_linux.go

@@ -139,7 +139,7 @@ func setupIO(process *libcontainer.Process, rootuid, rootgid int, createTTY, det
 			t.postStart = append(t.postStart, parent, child)
 			t.consoleC = make(chan error, 1)
 			go func() {
-				t.consoleC <- t.recvtty(process, parent)
+				t.consoleC <- t.recvtty(parent)
 			}()
 		} else {
 			// the caller of runc will handle receiving the console master