sdl2: drop QEMU_KEY_BACKSPACE special case

Not needed, kbd_put_qcode_console() will handle that for us.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 20180321135041.15768-5-kraxel@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

ui/sdl2-input.c

@@ -97,9 +97,6 @@ void sdl2_process_key(struct sdl2_console *scon,
             case SDL_SCANCODE_RETURN:
                 kbd_put_keysym_console(con, '\n');
                 break;
-            case SDL_SCANCODE_BACKSPACE:
-                kbd_put_keysym_console(con, QEMU_KEY_BACKSPACE);
-                break;
             default:
                 kbd_put_qcode_console(con, qcode, ctrl);
                 break;