slapos_crm/testSlapOSCRMSkins: Use _dropScript API from mixin instead repeat implementation

master/bt5/slapos_crm/TestTemplateItem/portal_components/test.erp5.testSlapOSCRMSkins.py

@@ -1219,13 +1219,6 @@ class TestSlapOSComputer_CheckState(TestCRMSkinsMixin):
 """return context.getPortalObject().REQUEST['_simulateBase_generateSupportRequestForSlapOS']""")
     transaction.commit()
 
-  def _dropBase_generateSupportRequestForSlapOS(self):
-    script_name = 'Base_generateSupportRequestForSlapOS'
-    if script_name in self.portal.portal_skins.custom.objectIds():
-      self.portal.portal_skins.custom.manage_delObjects(script_name)
-    transaction.commit()
-    self.assertFalse(script_name in self.portal.portal_skins.custom.objectIds())
-
   @simulate('ERP5Site_isSupportRequestCreationClosed', '*args, **kwargs','return 0')
   def test_Computer_checkState_call_support_request(self):
     computer = self._makeComputer(owner=self.makePerson(user=0))[0]
@@ -1245,7 +1238,7 @@ class TestSlapOSComputer_CheckState(TestCRMSkinsMixin):
     try:
       computer_support_request = computer.Computer_checkState()
     finally:
-      self._dropBase_generateSupportRequestForSlapOS()
+      self._dropScript("Base_generateSupportRequestForSlapOS")
 
     self.assertEqual(support_request,
       computer_support_request)
@@ -1263,7 +1256,7 @@ class TestSlapOSComputer_CheckState(TestCRMSkinsMixin):
     try:
       computer_support_request = computer.Computer_checkState()
     finally:
-      self._dropBase_generateSupportRequestForSlapOS()
+      self._dropScript("Base_generateSupportRequestForSlapOS")
 
     self.assertEqual(support_request,
       computer_support_request)