Uninstall BusinessTemplate at the end of test_BusinessTemplateWithZodbDocumentMigrated.

Otherwise, following ZODB Document tests will fail because of the ZODB
Document created but not removed in that test.

product/ERP5/tests/testBusinessTemplate.py

@@ -7165,6 +7165,11 @@ class TestDocumentTemplateItem(BusinessTemplateMixin):
                        CheckZodbDocumentExists \
                        CheckInstalledInstallationState \
                        CheckBuiltBuildingState \
+                       \
+                       UninstallBusinessTemplate \
+                       CheckBuiltBuildingState \
+                       CheckNotInstalledInstallationState \
+                       CheckZodbDocumentRemoved \
                        '
     sequence_list.addSequenceString(sequence_string)
     sequence_list.play(self)