[AutoOnboarding] OnFabricRemoved event is not handled

[Problem]
OnFabricRemoved event is not handled on AutoOnboarding scenario.
The event occurs when any device is removed from SmartThings.

[Cause]
exitMsgBox_enable variable that the boolean value is used when ioter blocks the process removing device itself during repeat-onboarding test

[Measure]
Remove a code setting the variable as True to show up the exit dialog

src/common/common_window.py

@@ -401,12 +401,11 @@ def auto_remove(self):
 
  ## Verify auto onboarding request ##
  def auto_go(self):
- self.exitMsgBox_enable = False
- if not self.auto.request_onboarding(self.device_info.com_port, self.device_info.device_num, self.plainTextEditPairingCode.toPlainText(), self.device_info.device_id):
+ if not self.auto.request_onboarding(self.device_info.com_port, self.device_info.device_num,
+   self.plainTextEditPairingCode.toPlainText(), self.device_info.device_id):
  self.appendTextBrowserLog("Can't work auto-onboarding")
  self.chkbox_auto.toggle()
  self.pushButtonDevicePower.toggle()
- self.exitMsgBox_enable = True
 
  ## Check if device is used in Automation ##
  def autotest_used(self, use):