nmcli: do not save/restore terminal attrs

This is vestigal. It has been in place, because we'd be turning off echo
ourselves when asking for password and needed to make sure we'd still
terminal in original state upon unexpected termination.

This shouldn't be necessary since commit 9d95e1f175 ('clients/cli: use a
nicer password prompt') we let readline take care of this and also clean
up after itself in nmc_cleanup_readline().

src/nmcli/nmcli.c

@@ -11,7 +11,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
-#include <termios.h>
 #include <unistd.h>
 #include <locale.h>
 #if HAVE_EDITLINE_READLINE
@@ -119,7 +118,6 @@ typedef struct {
 
 /* --- Global variables --- */
 GMainLoop     *loop = NULL;
-struct termios termios_orig;
 
 NM_CACHED_QUARK_FCN("nmcli-error-quark", nmcli_error_quark);
 
@@ -935,7 +933,6 @@ nmc_clear_sigint(void)
 void
 nmc_exit(void)
 {
-    tcsetattr(STDIN_FILENO, TCSADRAIN, &termios_orig);
     nmc_cleanup_readline();
     exit(1);
 }
@@ -1026,9 +1023,6 @@ main(int argc, char *argv[])
     textdomain(GETTEXT_PACKAGE);
 #endif
 
-    /* Save terminal settings */
-    tcgetattr(STDIN_FILENO, &termios_orig);
-
     nm_cli.return_text = g_string_new(_("Success"));
     loop               = g_main_loop_new(NULL, FALSE);