Lathe mode should not have touch off in X

def touch_off(event=None, new_axis_value = None):
        global system
        if not manual_ok(): return
        if joints_mode(): return

        if lathe:
            new_axis_value, system = prompt_touchoff(_("Z origin set (lathe)"),
                _("Enter %s coordinate relative to %%s:")
                        % "Z", 0.0, vars.touch_off_system.get())
        else:
         if new_axis_value is None:
            new_axis_value, system = prompt_touchoff(_("Touch Off"),
                _("Enter %s coordinate relative to %%s:")
                        % vars.current_axis.get().upper(), 0.0, vars.touch_off_system.get())
         else:
            system = vars.touch_off_system.get()

        if new_axis_value is None: return
        vars.touch_off_system.set(system)
        ensure_mode(linuxcnc.MODE_MDI)
        s.poll()

        if lathe:
         linear_axis = 2
         current_axis_mod = "z"
        else:
         linear_axis = vars.current_axis.get() in "xyzuvw"
         current_axis_mod = vars.current_axis_get()
        if linear_axis and vars.metric.get(): scale = 1/25.4
        else: scale = 1
		if linear_axis and 210 in s.gcodes:
            scale *= 25.4

        if system.split()[0] == "T":
            lnum = 10 + vars.tto_g11.get()
            offset_command = "G10 L%d P%d %c[%s*%.12f]" % (lnum, s.tool_in_spindle, current_axis_mod, new_axis_value, scale)
            c.mdi(offset_command)
            c.wait_complete()
            c.mdi("G43")
            c.wait_complete()
        else:
            offset_command = "G10 L20 %s %c[%s*%.12f]" % (system.split()[0], current_axis_mod, new_axis_value, scale)
            c.mdi(offset_command)
            c.wait_complete()

        ensure_mode(linuxcnc.MODE_MANUAL)
        s.poll()
        o.tkRedraw()
        reload_file(False)