Revert changes to test/completion and test/static_analysis except for 2.6 comment removal

test/completion/import_tree/classes.py

@@ -1,10 +1,10 @@
 blub = 1
 
-class Config2:
+class Config2():
     pass
 
 
-class BaseClass:
+class BaseClass():
     mode = Config2()
     if isinstance(whaat, int):
         mode2 = whaat