diff --git a/src/RestrictedPython/Guards.py b/src/RestrictedPython/Guards.py
index 245dcb0..af59dcb 100644
--- a/src/RestrictedPython/Guards.py
+++ b/src/RestrictedPython/Guards.py
@@ -183,10 +183,6 @@
 # super
 # type
 
-# for name in dir(exceptions):
-#    if name[0] != "_":
-#        safe_builtins[name] = getattr(exceptions, name)
-
 
 def _write_wrapper():
     # Construct the write wrapper class
@@ -267,7 +263,6 @@ def guarded_iter_unpack_sequence(it, spec, _getiter_):
     For example "for a, b in it"
     => Each object from the iterator needs guarded sequence unpacking.
     """
-
     # The iteration itself needs to be protected as well.
     for ob in _getiter_(it):
         yield guarded_unpack_sequence(ob, spec, _getiter_)
diff --git a/src/RestrictedPython/Utilities.py b/src/RestrictedPython/Utilities.py
index 4bb8f48..aee2b20 100644
--- a/src/RestrictedPython/Utilities.py
+++ b/src/RestrictedPython/Utilities.py
@@ -16,16 +16,6 @@
 import string
 
 
-# _old_filters = warnings.filters[:]
-# warnings.filterwarnings('ignore', category=DeprecationWarning)
-# try:
-#     try:
-#         import sets
-#     except ImportError:
-#         sets = None
-# finally:
-#     warnings.filters[:] = _old_filters
-
 utility_builtins = {}
 
 utility_builtins['string'] = string
diff --git a/src/RestrictedPython/tests/testRestrictions.py b/src/RestrictedPython/tests/testRestrictions.py
index c13e04d..7f3a383 100644
--- a/src/RestrictedPython/tests/testRestrictions.py
+++ b/src/RestrictedPython/tests/testRestrictions.py
@@ -316,32 +316,6 @@ def test_StackSize(self):
                     'should have been at least %d, but was only %d'
                     % (k, ss, rss))
 
-    def _test_BeforeAndAfter(self, mod):
-            from RestrictedPython.RCompile import RModule
-            from compiler import parse
-
-            defre = re.compile(r'def ([_A-Za-z0-9]+)_(after|before)\(')
-
-            beforel = [name for name in mod.__dict__
-                       if name.endswith("_before")]
-
-            for name in beforel:
-                before = getattr(mod, name)
-                before_src = get_source(before)
-                before_src = re.sub(defre, r'def \1(', before_src)
-                rm = RModule(before_src, '')
-                tree_before = rm._get_tree()
-
-                after = getattr(mod, name[:-6] + 'after')
-                after_src = get_source(after)
-                after_src = re.sub(defre, r'def \1(', after_src)
-                tree_after = parse(after_src)
-
-                self.assertEqual(str(tree_before), str(tree_after))
-
-                rm.compile()
-                verify(rm.getCode())
-
     def _compile_file(self, name):
         path = os.path.join(_HERE, name)
         f = open(path, "r")