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

test/completion/descriptors.py

@@ -50,7 +50,7 @@ C.just_a_method
 # -----------------
 # properties
 # -----------------
-class B:
+class B():
     @property
     def r(self):
         return 1
@@ -71,7 +71,7 @@ B().p
 #? []
 B().p().
 
-class PropClass:
+class PropClass():
     def __init__(self, a):
         self.a = a
     @property
@@ -190,7 +190,7 @@ E.u(1)
 from functools import partial
 
 
-class Memoize:
+class Memoize():
     def __init__(self, func):
         self.func = func
 
@@ -205,7 +205,7 @@ class Memoize:
         return self.func(*args, **kwargs)
 
 
-class MemoizeTest:
+class MemoizeTest():
     def __init__(self, x):
         self.x = x