ERP5Type/ComponentTool: don't include getBusinessTemplateList in test template

For test components, we don't use getBusinessTemplateList but define the
business templates to be installed as (test) dependencies of the business
template containing the test.

product/ERP5Type/Tool/ComponentTool.py

@@ -227,12 +227,6 @@ class Test(ERP5TypeTestCase):
   A Sample Test Class
   """
 
-  def getBusinessTemplateList(self):
-    """
-    Tuple of Business Templates we need to install
-    """
-    return ('erp5_base',)
-
   def afterSetUp(self):
     """
     This is ran before anything, used to set the environment